Weekly rack prices, in dollars 2011-2016
| ($USD) | Detroit UNL | Indnpls UNL | Cleveland UNL | Chicago UNL | Detroit DSL | Indnpls DSL | Cleveland DSL | Chicago DSL |
| 12/19/2016 | $1.5965 | $1.5610 | $1.6240 | $1.6581 | $1.6914 | $1.6570 | $1.7328 | $1.6494 |
| 12/12/2016 | $1.5175 | $1.4768 | $1.5431 | $1.5997 | $1.6607 | $1.6134 | $1.6909 | $1.5973 |
| 12/5/2016 | $1.4535 | $1.4210 | $1.4848 | $1.5548 | $1.6784 | $1.6107 | $1.6857 | $1.6043 |
| 11/28/2016 | $1.4708 | $1.4454 | $1.5126 | $1.5705 | $1.5788 | $1.5015 | $1.5707 | $1.4816 |
| 11/21/2016 | $1.3776 | $1.3623 | $1.4254 | $1.4693 | $1.4839 | $1.4144 | $1.4776 | $1.3803 |
| 11/14/2016 | $1.3078 | $1.3053 | $1.3500 | $1.3824 | $1.4487 | $1.3814 | $1.4304 | $1.3360 |
| 11/7/2016 | $1.3068 | $1.3057 | $1.3301 | $1.3685 | $1.4385 | $1.3932 | $1.4412 | $1.3396 |
| 10/31/2016 | $1.3900 | $1.3963 | $1.4056 | $1.4517 | $1.5621 | $1.5275 | $1.5478 | $1.5069 |
| 10/24/2016 | $1.3859 | $1.3994 | $1.4136 | $1.4312 | $1.5684 | $1.5594 | $1.5880 | $1.5460 |
| 10/17/2016 | $1.4260 | $1.4173 | $1.4255 | $1.4477 | $1.6162 | $1.6135 | $1.6384 | $1.6129 |
| 10/10/2016 | $1.5624 | $1.5168 | $1.5317 | $1.5653 | $1.6585 | $1.6725 | $1.6899 | $1.6682 |
| 10/3/2016 | $1.6014 | $1.5219 | $1.5428 | $1.5962 | $1.6083 | $1.6272 | $1.6506 | $1.6250 |
| 9/19/2016 | $1.5551 | $1.4317 | $1.4565 | $1.5445 | $1.4690 | $1.4797 | $1.5085 | $1.4809 |
| 3/21/2016 | $1.2775 | $1.2497 | $1.2296 | $1.3135 | $1.3423 | $1.3353 | $1.3839 | $1.3201 |
| 2/29/2016 | $1.1495 | $1.1197 | $1.1629 | $1.0869 | $1.1704 | $1.1328 | $1.1979 | $1.1271 |
| 2/22/2016 | $1.0319 | $1.0063 | $1.0484 | $0.9672 | $1.0895 | $1.0801 | $1.1109 | $1.0730 |
| 2/8/2016 | $0.8184 | $0.8201 | $0.8602 | $0.8195 | $1.1601 | $1.1108 | $1.1209 | $1.1008 |
| 1/25/2016 | $0.9657 | $0.9682 | $1.0275 | $1.0048 | $1.0683 | $1.0536 | $1.0647 | $1.0382 |
| 1/18/2016 | $0.9281 | $0.9243 | $0.9744 | $0.9731 | $0.9634 | $0.9623 | $0.9346 | $0.9309 |
| 12/28/2015 | $1.2566 | $1.2988 | $1.3350 | $1.4053 | $1.1263 | $1.1311 | $1.1323 | $1.0963 |
| 12/21/2015 | $1.2354 | $1.3014 | $1.3329 | $1.4040 | $1.1327 | $1.0910 | $1.1422 | $1.0813 |
| 12/14/2015 | $1.2196 | $1.3057 | $1.3297 | $1.3697 | $1.1687 | $1.1497 | $1.2023 | $1.1559 |
| 12/7/2015 | $1.1247 | $1.2251 | $1.2751 | $1.2484 | $1.2610 | $1.2310 | $1.3427 | $1.2730 |
| 11/30/2015 | $1.0996 | $1.2028 | $1.2610 | $1.2345 | $1.3373 | $1.3558 | $1.4266 | $1.3755 |
| 11/24/2015 | $1.1161 | $1.1395 | $1.2384 | $1.1598 | $1.3238 | $1.3497 | $1.4321 | $1.3788 |
| 11/16/2015 | $1.2601 | $1.2182 | $1.2638 | $1.2356 | $1.6600 | $1.5182 | $1.5583 | $1.5069 |
| 11/9/2015 | $1.5357 | $1.4529 | $1.4386 | $1.4412 | $1.8696 | $1.6131 | $1.5623 | $1.5945 |
| 10/12/2015 | $1.7922 | $1.6924 | $1.6857 | $1.8771 | $2.2397 | $2.0622 | $1.9921 | $1.9969 |
| 9/28/2015 | $1.8027 | $1.7135 | $1.7388 | $1.8577 | $1.7515 | $1.6573 | $1.6252 | $1.6301 |
| 9/21/2015 | $1.6576 | $1.5953 | $1.5949 | $1.8056 | $1.6352 | $1.5691 | $1.5674 | $1.5591 |
| 06/15/15 | $2.1676 | $1.9696 | $2.1883 | $2.2501 | $2.0647 | $1.9323 | $2.0879 | $1.8549 |
| 06/02/15 | $2.1814 | $2.0719 | $2.1631 | $2.3311 | $2.1310 | $2.0226 | $2.2090 | $1.9909 |
| 05/25/15 | $2.0915 | $1.9971 | $2.1119 | $2.4306 | $2.0581 | $1.9871 | $2.1571 | $1.9881 |
| 05/18/15 | $2.0471 | $1.9752 | $2.0586 | $2.1541 | $2.0849 | $2.0413 | $2.1127 | $2.0361 |
| 05/04/15 | $1.8636 | $1.8507 | $1.8965 | $2.0404 | $1.8915 | $1.8876 | $1.9209 | $1.8746 |
| 04/27/15 | $1.7917 | $1.7540 | $1.8497 | $1.9571 | $1.7717 | $1.8254 | $1.9088 | $1.8137 |
| 04/20/15 | $1.7995 | $1.7388 | $1.7732 | $1.9534 | $1.7932 | $1.8397 | $1.9048 | $1.8147 |
| 04/06/15 | $1.6987 | $1.5709 | $1.6370 | $1.8902 | $1.8034 | $1.7597 | $1.8800 | $1.7306 |
| 03/23/15 | $1.8029 | $1.6878 | $1.7484 | $2.1463 | $1.8521 | $1.8074 | $1.9319 | $1.7520 |
| 03/16/15 | $1.5567 | $1.4939 | $1.6023 | $1.6107 | $1.8721 | $1.8440 | $1.9844 | $1.7590 |
| 03/09/15 | $1.4689 | $1.4438 | $1.5372 | $1.4955 | $1.9759 | $1.9672 | $2.0516 | $1.8593 |
| 03/02/15 | $1.6908 | $1.6656 | $1.7453 | $1.7492 | $2.1369 | $2.1076 | $2.2665 | $2.0241 |
| 02/23/15 | $1.5804 | $1.5854 | $1.6257 | $1.6740 | $2.1172 | $2.0783 | $2.1704 | $2.0147 |
| 02/17/15 | $1.6134 | $1.6050 | $1.6282 | $1.6836 | $2.0235 | $2.0077 | $2.0610 | $1.9391 |
| 02/04/15 | $1.4710 | $1.4929 | $1.5244 | $1.5318 | $1.7712 | $1.7770 | $1.8954 | $1.6799 |
| 01/26/15 | $1.3517 | $1.3746 | $1.4386 | $1.3610 | $1.6916 | $1.6476 | $1.7927 | $1.5777 |
| 01/19/15 | $1.2249 | $1.2668 | $1.3247 | $1.2860 | $1.5542 | $1.5591 | $1.6766 | $1.4961 |
| 01/14/15 | $1.1244 | $1.2142 | $1.2620 | $1.2611 | $1.4733 | $1.5403 | $1.6125 | $1.5177 |
| 01/05/15 | $1.2097 | $1.2998 | $1.3544 | $1.3526 | $1.6267 | $1.7651 | $1.7570 | $1.6802 |
| 12/29/14 | $1.2982 | $1.3347 | $1.4318 | $1.4142 | $1.7995 | $1.9221 | $1.9092 | $1.8156 |
| 12/22/14 | $1.4177 | $1.4436 | $1.5538 | $1.5096 | $1.9559 | $2.0198 | $1.9919 | $1.8693 |
| 12/08/14 | $1.8391 | $1.8489 | $1.9543 | $1.8656 | $2.4854 | $2.4109 | $2.3294 | $2.1836 |
| 11/25/14 | $2.1238 | $2.1364 | $2.2362 | $2.1254 | $2.9721 | $2.9109 | $2.8122 | $2.7324 |
| 11/17/14 | $2.2103 | $2.1435 | $2.3184 | $2.1988 | $3.0179 | $2.9004 | $2.8767 | $2.8281 | 11/10/14 | $2.2323 | $2.1722 | $2.3788 | $2.2756 | $3.3111 | $3.1466 | $3.1335 | $3.1234 |
| 11/3/14 | $2.2540 | $2.1547 | $2.3533 | $2.2538 | $3.3066 | $3.1965 | $3.2470 | $3.1616 |
| 10/20/14 | $2.3665 | $2.2967 | $2.4380 | $2.3572 | $2.9210 | $2.8854 | $2.9593 | $2.8294 |
| 10/13/14 | $2.3983 | $2.3375 | $2.4596 | $2.4624 | $2.7550 | $2.7169 | $2.7377 | $2.6932 |
| 10/06/14 | $2.4581 | $2.4445 | $2.5523 | $2.5570 | $2.7783 | $2.7337 | $2.7484 | $2.7113 |
| 09/29/14 | $2.5961 | $2.4907 | $2.5740 | $2.6784 | $2.8473 | $2.7985 | $2.8256 | $2.7897 |
| 09/22/14 | $2.6420 | $2.5062 | $2.6899 | $2.7075 | $2.7835 | $2.7829 | $2.8392 | $2.7640 |
| 09/15/14 | $2.7200 | $2.6000 | $2.7500 | $2.8200 | $2.8400 | $2.8100 | $2.8500 | $2.7900 |
| 09/08/14 | $2.8000 | $2.6900 | $2.8400 | $2.8600 | $2.8700 | $2.8400 | $2.8900 | $2.8100 |
| 09/01/14 | $2.7948 | $2.6876 | $2.8247 | $2.8055 | $2.9550 | $2.9180 | $3.0124 | $2.8904 |
| 08/18/14 | $2.7127 | $2.5985 | $2.6406 | $2.7144 | $2.8501 | $2.8818 | $2.9314 | $2.8541 |
| 08/11/14 | $2.7928 | $2.7243 | $2.8289 | $2.8487 | $2.9465 | $2.9578 | $2.9862 | $2.9504 |
| 08/04/14 | $2.6267 | $2.5932 | $2.7682 | $2.6756 | $2.9216 | $2.9271 | $2.9895 | $2.9153 |
| 07/28/14 | $2.8311 | $98.1700 | $2.8866 | $2.6625 | $2.6175 | $2.8949 | ||
| 07/21/14 | $2.7684 | $2.6205 | $2.7909 | $2.7259 | $2.9372 | $2.8861 | $2.9978 | $2.8914 |
| 07/14/14 | $2.9013 | $2.6689 | $2.8475 | $2.7919 | $2.9507 | $2.8807 | $2.9774 | $2.8723 |
| 06/30/14 | $3.0866 | $2.8413 | $2.9655 | $3.0200 | $3.0938 | $3.0450 | $3.1097 | $3.0043 |
| 06/23/14 | $3.1825 | $2.9134 | $3.0287 | $3.1118 | $3.1027 | $3.0794 | $3.1934 | $3.0439 |
| 06/17/14 | $3.2264 | $2.9768 | $3.1186 | $3.2032 | $3.0446 | $3.0405 | $3.1367 | $2.9922 |
| 06/02/14 | $3.2289 | $3.2399 | $3.3512 | $3.1978 | $2.9591 | $2.9665 | $3.1228 | $2.9260 |
| 05/26/14 | $3.1578 | $3.1772 | $3.3066 | $3.0955 | $3.0548 | $3.0408 | $3.2333 | $3.0036 |
| 05/19/14 | $3.0329 | $3.1104 | $3.2213 | $3.0237 | $3.0592 | $3.0620 | $3.2108 | $3.0052 |
| 05/12/14 | $2.9507 | $2.9864 | $3.0700 | $2.9425 | $3.0651 | $3.0556 | $3.1607 | $2.9937 |
| 05/05/14 | $2.9451 | $2.9722 | $3.1262 | $3.0892 | $3.1161 | $3.1071 | $3.1724 | $3.0227 |
| 04/28/14 | $3.0611 | $3.0238 | $3.2016 | $3.1981 | $3.2231 | $3.1606 | $3.2719 | $3.0989 |
| 04/21/14 | $3.0533 | $3.0107 | $3.1388 | $3.2245 | $3.1840 | $3.2514 | $3.2720 | $3.0751 |
| 04/14/14 | $3.0155 | $2.9746 | $3.0573 | $3.1523 | $3.1495 | $3.2411 | $3.2413 | $3.0413 |
| 04/07/14 | $3.0155 | $2.9746 | $3.0573 | $3.1523 | $3.1495 | $3.2411 | $3.2413 | $3.0413 |
| 03/24/14 | $2.8849 | $2.9142 | $2.9335 | $2.9780 | $3.0851 | $3.1860 | $3.2659 | $3.0079 |
| 03/17/14 | $2.9663 | $2.9825 | $3.0210 | $3.0324 | $3.1418 | $3.2541 | $3.4203 | $3.0692 |
| 03/10/14 | $2.9568 | $2.9479 | $3.0535 | $3.0079 | $3.2719 | $3.3830 | $3.7003 | $3.1811 |
| 03/03/14 | $2.9442 | $2.9213 | $3.0539 | $2.9980 | $3.3495 | $3.4120 | $3.7712 | $3.2195 |
| 02/24/14 | $2.8297 | $2.7798 | $2.9323 | $2.8780 | $3.4793 | $3.4223 | $3.7404 | $3.2670 |
| 02/11/14 | $2.5975 | $2.5577 | $2.8315 | $2.5983 | $3.0372 | $2.9760 | $3.3170 | $2.9302 |
| 02/03/14 | $2.6463 | $2.5642 | $2.7384 | $2.6320 | $3.4186 | $3.3114 | $3.7210 | $3.1928 |
| 01/20/14 | $2.5975 | $2.5577 | $2.8315 | $2.5983 | $3.0372 | $2.9760 | $3.3170 | $2.9302 |
| 01/06/14 | $2.4956 | $2.5808 | $2.6973 | $2.4965 | $2.9494 | $2.9662 | $2.9867 | $2.9402 |
| 12/30/13 | $2.5846 | $2.6305 | $2.7853 | $2.6469 | $3.0440 | $3.0659 | $3.1920 | $3.0413 |
| 12/16/13 | $2.3846 | $2.4671 | $2.6246 | $2.4219 | $2.8427 | $2.8874 | $2.9458 | $2.8596 |
| 12/09/13 | $2.4956 | $2.5808 | $2.6973 | $2.4965 | $2.9494 | $2.9662 | $2.9867 | $2.9402 |
| 12/02/13 | $2.4437 | $2.5003 | $2.5909 | $2.4448 | $3.0991 | $3.1175 | $3.1487 | $3.0883 |
| 11/25/13 | $2.5117 | $2.5593 | $2.6406 | $2.5115 | $3.1487 | $3.1555 | $3.2297 | $3.1371 |
| 11/18/13 | $2.4899 | $2.5160 | $2.6159 | $2.4790 | $3.0166 | $3.0253 | $3.1158 | $2.9777 |
| 11/11/13 | $2.4726 | $2.4767 | $2.5580 | $2.4350 | $3.0262 | $3.0231 | $3.1867 | $2.9679 |
| 11/04/13 | $2.4938 | $2.4583 | $2.5475 | $2.4592 | $3.0591 | $3.0906 | $3.1995 | $2.9811 |
| 10/28/13 | $2.5445 | $2.5038 | $2.5920 | $2.5351 | $3.0109 | $3.0565 | $3.1571 | $2.9101 |
| 10/21/13 | $2.6635 | $2.6199 | $2.7006 | $2.6549 | $3.0752 | $3.0797 | $3.1581 | $2.9801 |
| 10/14/13 | $2.7308 | $2.6929 | $2.7500 | $2.7251 | $3.1145 | $3.0652 | $3.1608 | $2.9843 |
| 10/07/13 | $2.6674 | $2.5969 | $2.6982 | $2.6559 | $3.0742 | $3.0397 | $3.1240 | $2.9495 |
| 09/30/13 | $2.6788 | $2.6155 | $2.6698 | $2.6758 | $3.0988 | $3.0588 | $3.1158 | $3.0049 |
| 09/23/13 | $2.7548 | $2.6888 | $2.7682 | $2.7932 | $3.1405 | $3.1034 | $3.1628 | $3.0706 |
| 09/16/13 | $2.8227 | $2.7286 | $2.7644 | $2.8545 | $3.2385 | $3.2184 | $3.2256 | $3.1613 |
| 09/09/13 | $2.9025 | $2.8529 | $2.8851 | $2.9438 | $3.2480 | $3.2485 | $3.2718 | $3.1810 |
| 09/02/13 | $3.0076 | $2.9545 | $3.0010 | $3.0288 | $3.2424 | $3.2323 | $3.3060 | $3.1707 |
| 08/26/13 | $2.9159 | $2.8770 | $2.8999 | $2.9050 | $3.1789 | $3.1765 | $3.2642 | $3.1410 |
| 08/19/13 | $2.8322 | $2.7893 | $2.8444 | $2.8703 | $3.0887 | $3.1154 | $3.1899 | $3.0578 |
| 08/12/13 | $2.7729 | $2.7728 | $2.8214 | $2.8630 | $2.9577 | $3.0302 | $3.0823 | $2.9742 |
| 08/05/13 | $2.8447 | $2.8228 | $2.8247 | $2.9868 | $3.0063 | $3.0967 | $3.1315 | $3.0411 |
| 07/29/13 | $2.8668 | $2.8403 | $2.8536 | $3.0738 | $2.9478 | $3.0299 | $3.0358 | $2.9887 |
| 07/22/13 | $2.9389 | $2.9146 | $2.9185 | $3.1214 | $2.9932 | $3.0629 | $3.0231 | $3.0370 |
| 07/15/13 | $3.1490 | $3.1062 | $3.0911 | $3.3012 | $2.9522 | $3.0424 | $2.9894 | $3.0065 |
| 07/08/13 | $2.8798 | $2.7999 | $2.8070 | $2.9266 | $2.9648 | $3.0504 | $3.0056 | $3.0021 |
| 07/01/13 | $2.7695 | $2.6406 | $2.6453 | $2.8011 | $2.8603 | $2.9150 | $2.9367 | $2.8759 |
| 06/24/13 | $2.6816 | $2.6170 | $2.5475 | $2.7850 | $2.8671 | $2.9127 | $2.9039 | $2.8668 |
| 06/17/13 | $2.9367 | $2.7993 | $2.7902 | $3.0678 | $3.1535 | $3.1330 | $3.1358 | $3.1039 |
| 06/11/13 | $3.4667 | $3.3586 | $3.3530 | $3.5481 | $3.1333 | $3.1218 | $3.1483 | $3.0990 |
| 06/03/13 | $3.3538 | $3.3029 | $3.2727 | $3.4148 | $3.0110 | $3.0182 | $2.9831 | $2.9662 |
| 05/27/13 | $3.1754 | $3.1481 | $3.1527 | $3.1901 | $3.1057 | $3.1331 | $3.1323 | $3.0724 |
| 05/20/13 | $3.2682 | $3.2187 | $3.2289 | $3.3129 | $3.2491 | $3.2824 | $3.2514 | $3.2339 |
| 05/06/13 | $3.0485 | $3.0503 | $3.1248 | $3.3703 | $3.2464 | $3.2778 | $3.2848 | $3.2490 |
| 04/29/13 | $3.0036 | $3.0224 | $3.1402 | $3.3126 | $3.1492 | $3.1803 | $3.2033 | $3.1524 |
| 04/22/13 | $3.0489 | $2.9918 | $3.1298 | $3.2653 | $3.0113 | $3.0351 | $3.1005 | $2.9925 |
| 04/15/13 | $2.8007 | $2.7251 | $2.8493 | $2.9636 | $3.0596 | $3.0608 | $3.1213 | $3.0227 |
| 04/08/13 | $2.8161 | $2.6949 | $2.8295 | $2.8843 | $3.1213 | $3.1013 | $3.1765 | $3.0789 |
| 04/01/13 | $2.9736 | $2.9082 | $2.9930 | $3.1538 | $3.2118 | $3.2235 | $3.2682 | $3.2082 |
| 03/25/13 | $2.9481 | $2.8849 | $2.9729 | $3.0958 | $3.0552 | $3.0695 | $3.1016 | $3.0546 |
| 03/18/13 | $3.1183 | $3.0434 | $3.1715 | $3.1596 | $3.1051 | $3.1096 | $3.1626 | $3.1049 |
| 03/11/13 | $3.0347 | $2.9793 | $3.1134 | $3.0468 | $3.1803 | $3.1594 | $3.1898 | $3.1699 |
| 03/04/13 | $2.8988 | $2.8454 | $2.9566 | $2.8943 | $3.1793 | $3.1506 | $3.2190 | $3.1652 |
| 02/25/13 | $3.1205 | $3.0717 | $3.2270 | $3.1664 | $3.3498 | $3.3232 | $3.4095 | $3.3345 |
| 02/18/13 | $3.1523 | $3.1045 | $3.2236 | $3.1918 | $3.4223 | $3.3921 | $3.5553 | $3.4001 |
| 02/11/13 | $3.0136 | $2.9760 | $3.0486 | $3.0747 | $3.4278 | $3.4230 | $3.6214 | $3.4148 |
| 02/04/13 | $2.9673 | $2.9519 | $2.9854 | $2.9936 | $3.2841 | $3.2929 | $3.3951 | $3.2688 |
| 01/28/13 | $2.7311 | $2.7244 | $2.8226 | $2.7677 | $3.0852 | $3.1139 | $3.1926 | $3.0946 |
| 01/21/13 | $2.6293 | $2.6253 | $2.7737 | $2.6562 | $3.0067 | $3.0419 | $3.1202 | $3.0262 |
| 01/14/13 | $2.5036 | $2.5068 | $2.6374 | $2.5308 | $2.9209 | $2.9579 | $2.9999 | $2.9478 |
| 01/07/13 | $2.5328 | $2.5406 | $2.6272 | $2.5369 | $2.9470 | $3.0034 | $3.0281 | $2.9890 |
| 12/11/12 | $2.6242 | $2.5438 | $2.6844 | $2.6276 | $3.1101 | $3.1556 | $3.1544 | $3.0753 |
| 12/03/12 | $2.7261 | $2.6655 | $2.8715 | $2.7098 | $3.3390 | $3.4310 | $3.4466 | $3.2728 |
| 11/26/12 | $2.8141 | $2.7863 | $3.0228 | $2.8026 | $3.3914 | $3.4192 | $3.6469 | $3.2454 |
| 11/19/12 | $2.7743 | $2.7194 | $2.9327 | $2.7315 | $3.3757 | $3.4049 | $3.5920 | $3.2318 |
| 11/12/12 | $2.8787 | $2.9293 | $3.0954 | $2.8342 | $3.3189 | $3.2033 | $3.4818 | $3.1074 |
| 11/05/12 | $2.7160 | $2.7985 | $2.9915 | $2.7012 | $3.1737 | $3.0973 | $3.3004 | $3.0510 |
| 10/30/12 | $2.7315 | $2.7311 | $2.8573 | $2.7328 | $3.3307 | $3.2659 | $3.4027 | $3.2038 |
| 10/22/12 | $2.7896 | $2.7684 | $2.8621 | $2.7650 | $3.3603 | $3.3159 | $3.3624 | $3.2492 |
| 10/15/12 | $2.8569 | $2.8429 | $2.9335 | $2.8033 | $3.4996 | $3.4470 | $3.4956 | $3.4066 |
| 10/08/12 | $3.1533 | $3.0651 | $3.1830 | $3.1179 | $3.3985 | $3.3546 | $3.4118 | $3.3006 |
| 10/01/12 | $3.1648 | $3.0859 | $3.1687 | $3.1436 | $3.3616 | $3.3145 | $3.3753 | $3.2533 |
| 09/24/12 | $3.2589 | $3.1429 | $3.2162 | $3.2277 | $3.3436 | $3.2928 | $3.3601 | $3.2124 |
| 09/17/12 | $3.2999 | $3.2381 | $3.3142 | $3.3679 | $3.3876 | $3.3549 | $3.4096 | $3.3025 |
| 09/11/12 | $3.3675 | $3.2799 | $3.2693 | $3.3761 | $3.3356 | $3.2951 | $3.3181 | $3.2533 |
| 09/03/12 | $3.4552 | $3.3260 | $3.2880 | $3.3990 | $3.4006 | $3.3931 | $3.4171 | $3.3514 |
| 08/27/12 | $3.2336 | $3.0568 | $3.1589 | $3.2413 | $3.2929 | $3.2906 | $3.2847 | $3.2588 |
| 08/06/12 | $3.3834 | $3.2355 | $3.2745 | $3.3855 | $3.1942 | $3.1686 | $3.1983 | $3.1391 |
| 07/30/12 | $3.0713 | $2.8892 | $2.9772 | $3.0265 | $3.0544 | $3.0667 | $3.0856 | $3.0188 |
| 07/16/12 | $2.9001 | $2.7005 | $2.7831 | $2.8726 | $2.8867 | $2.8894 | $2.9048 | $2.8391 |
| 07/09/12 | $2.8663 | $2.6519 | $2.7386 | $2.8166 | $2.8059 | $2.8121 | $2.8184 | $2.7655 |
| 06/25/12 | $2.8221 | $2.5860 | $2.6776 | $2.6589 | $2.6907 | $2.6734 | $2.6526 | $2.6241 |
| 06/18/12 | $2.9388 | $2.7533 | $2.9870 | $2.7911 | $2.7690 | $2.7619 | $2.7364 | $2.7157 |
| 06/11/12 | $3.2507 | $3.0519 | $3.4254 | $3.0971 | $2.9696 | $2.9197 | $2.9262 | $2.9150 |
| 06/04/12 | $2.9220 | $2.9261 | $3.2195 | $3.0206 | $2.9634 | $2.9326 | $3.0025 | $2.8824 |
| 05/29/12 | $2.9514 | $2.9742 | $3.2886 | $3.0553 | $2.9856 | $2.9824 | $3.0178 | $2.8993 |
| 05/21/12 | $3.0476 | $3.0582 | $3.0649 | $3.1933 | $3.0314 | $3.0630 | $3.0952 | $2.9637 |
| 05/14/12 | $3.0412 | $3.0849 | $3.3255 | $3.2027 | $3.2073 | $3.2663 | $3.2974 | $3.1477 |
| 05/07/12 | $2.9669 | $3.0596 | $3.0807 | $3.1191 | $3.1257 | $3.1842 | $3.1883 | $3.0354 |
| 04/30/12 | $3.0752 | $3.1422 | $3.2281 | $3.3326 | $3.3292 | $3.3867 | $3.4404 | $3.2432 |
| 04/24/12 | $3.0803 | $3.1561 | $3.1386 | $3.3005 | $3.2500 | $3.2779 | $3.3061 | $3.1237 |
| 04/16/12 | $3.1257 | $3.2200 | $3.2082 | $3.3032 | $3.1557 | $3.1562 | $3.1686 | $3.0067 |
| 04/09/12 | $3.0979 | $3.1019 | $3.1353 | $3.2381 | $3.4640 | $3.3795 | $3.4632 | $3.2601 |
| 04/02/12 | $3.2751 | $3.2408 | $3.2320 | $3.4199 | $3.5163 | $3.4473 | $3.5808 | $3.2731 |
| 03/26/12 | $3.2909 | $3.2568 | $3.2862 | $3.6328 | $3.4290 | $3.4083 | $3.5208 | $3.2162 |
| 03/19/12 | $3.2786 | $3.2654 | $3.2633 | $3.4939 | $3.4622 | $3.4570 | $3.6001 | $3.2891 |
| 03/12/12 | $3.2166 | $3.2443 | $3.2699 | $3.3525 | $3.3849 | $3.4057 | $3.5434 | $3.2196 |
| 03/05/12 | $3.0691 | $3.1269 | $3.1469 | $3.1223 | $3.2738 | $3.3526 | $3.5348 | $3.1592 |
| 02/27/12 | $3.0411 | $3.1296 | $3.2320 | $3.0617 | $3.1425 | $3.2243 | $3.4063 | $3.0750 |
| 02/20/12 | $2.6969 | $2.7561 | $2.9305 | $2.7348 | $3.0097 | $3.0814 | $3.1789 | $2.9708 |
| 02/13/12 | $2.6742 | $2.6988 | $2.8600 | $2.6949 | $3.0437 | $3.1082 | $3.1990 | $3.0455 |
| 01/30/12 | $2.7259 | $2.7322 | $2.8876 | $2.7477 | $3.0114 | $3.0535 | $3.1162 | $3.0051 |
| 01/23/12 | $2.5872 | $2.5758 | $2.7363 | $2.6012 | $2.8545 | $2.8809 | $2.9306 | $2.8436 |
| 01/16/12 | $2.6667 | $2.6604 | $2.7110 | $2.7009 | $2.8965 | $2.9191 | $2.8976 | $2.9100 |
| 12/19/11 | $2.4949 | $2.5178 | $2.5567 | $2.4872 | $2.7602 | $2.7761 | $2.7819 | $2.7418 |
| 12/12/11 | $2.5927 | $2.6123 | $2.6498 | $2.5856 | $2.8511 | $2.8734 | $2.8890 | $2.8424 |
| 12/06/11 | $2.6533 | $2.6683 | $2.7519 | $2.6707 | $2.9612 | $2.9775 | $2.9891 | $2.9514 |
| 11/28/11 | $2.5967 | $2.6045 | $2.6616 | $2.6148 | $3.0603 | $3.0649 | $3.0621 | $3.0251 |
| 11/21/11 | $2.5189 | $2.5348 | $2.5618 | $2.5441 | $3.1375 | $3.1395 | $3.1185 | $3.1073 |
| 11/14/11 | $2.6342 | $2.6540 | $2.7171 | $2.6633 | $3.4597 | $3.4399 | $3.4579 | $3.4222 |
| 11/07/11 | $2.7694 | $2.7807 | $2.8168 | $2.7937 | $3.3138 | $3.2936 | $3.3273 | $3.2891 |
| 10/31/11 | $2.7033 | $2.7212 | $2.7559 | $2.7113 | $3.2203 | $3.2131 | $3.2412 | $3.1932 |
| 10/24/11 | $2.6770 | $2.6999 | $2.7053 | $2.6799 | $3.1461 | $3.1307 | $3.1478 | $3.1155 |
| 10/17/11 | $2.7105 | $2.7108 | $2.7326 | $2.7018 | $2.9376 | $2.9368 | $2.9534 | $2.9122 |
| 10/11/11 | $2.7105 | $2.7108 | $2.7326 | $2.7018 | $2.9376 | $2.9368 | $2.9534 | $2.9122 |
| 09/26/11 | $2.6804 | $2.6305 | $2.6151 | $2.6548 | $2.8872 | $2.8835 | $2.8886 | $2.8619 |
| 09/19/11 | $3.0793 | $2.9364 | $2.9363 | $3.0111 | $3.1150 | $3.0914 | $3.0910 | $3.0687 |
| 09/12/11 | $3.0793 | $2.9364 | $2.9363 | $3.0111 | $3.1150 | $3.0914 | $3.0910 | $3.0687 |
| 09/06/11 | $3.2272 | $3.0861 | $3.1081 | $3.1628 | $3.1519 | $3.1344 | $3.1417 | $3.1010 |
| 08/30/11 | $3.1534 | $3.0488 | $3.0738 | $3.1444 | $3.1315 | $3.1474 | $3.1526 | $3.1086 |
| 08/22/11 | $3.0535 | $2.9636 | $2.9636 | $3.0631 | $2.9947 | $3.0197 | $3.0313 | $2.9729 |
| 08/08/11 | $2.9182 | $2.8267 | $2.8617 | $2.9375 | $3.0090 | $3.0108 | $3.0373 | $2.9812 |
| 08/01/11 | $3.1357 | $3.0556 | $3.0543 | $3.1643 | $3.1556 | $3.1754 | $3.1653 | $3.1365 |
| 07/25/11 | $3.1311 | $3.0381 | $3.0307 | $3.1289 | $3.1800 | $3.2002 | $3.1840 | $3.1654 |
| 07/18/11 | $3.1386 | $3.0519 | $3.0461 | $3.1743 | $3.2079 | $3.2227 | $3.2068 | $3.1926 |
| 07/11/11 | $3.1374 | $3.0343 | $3.0233 | $3.1802 | $3.2031 | $3.2143 | $3.2055 | $3.1978 |
| 07/06/11 | $3.0049 | $2.8509 | $2.8419 | $3.0091 | $3.1026 | $3.1098 | $3.0968 | $3.1102 |
| 06/27/11 | $3.0049 | $2.8509 | $2.8419 | $3.0091 | $3.1026 | $3.1098 | $3.0968 | $3.1102 |
| 06/20/11 | $3.0049 | $2.8509 | $2.8419 | $3.0091 | $3.1026 | $3.1098 | $3.0968 | $3.1102 |
| 06/13/11 | $3.1386 | $2.9858 | $2.9864 | $3.1493 | $3.2011 | $3.2042 | $3.2219 | $3.2096 |
| 06/06/11 | $3.3044 | $3.1920 | $3.1683 | $3.3756 | $3.2084 | $3.1996 | $3.2065 | $3.2057 |
| 05/30/11 | $3.3624 | $3.2951 | $3.2563 | $3.3869 | $3.2245 | $3.2035 | $3.1935 | $3.1920 |
| 05/23/11 | $3.1118 | $3.0299 | $3.0552 | $3.1192 | $3.1728 | $3.1415 | $3.1657 | $3.1335 |
| 05/16/11 | $3.3315 | $3.3214 | $3.3454 | $3.3867 | $3.2042 | $3.1727 | $3.2374 | $3.1569 |
| 05/09/11 | $3.2738 | $3.2927 | $3.2795 | $3.3727 | $3.0575 | $3.0432 | $3.0697 | $3.0530 |
| 05/03/11 | $3.5177 | $3.5488 | $3.5689 | $3.6615 | $3.4421 | $3.4284 | $3.4768 | $3.4259 |