List of archive prices prior to November 2009 ($/L)
| 10/29/2009 | 71.6669 | 73.1097 | 69.6369 | 49.0264 | 70.4997 | 61.6208 | 39.702 | 33.3721 |
| 10/22/2009 | 69.6969 | 71.1397 | 67.6669 | 47.5409 | 68.8297 | 59.9908 | 37.702 | 31.6721 |
| 10/15/2009 | 67.7469 | 69.1897 | 65.7169 | 47.2229 | 66.9797 | 58.2408 | 35.762 | 30.0721 |
| 10/08/2009 | 66.8969 | 68.3397 | 64.8669 | 47.2072 | 65.5797 | 56.6408 | 35.252 | 30.5721 |
| 10/01/2009 | 65.4969 | 66.9397 | 63.4669 | 47.2051 | 64.4797 | 55.5408 | 34.872 | 30.5221 |
| 09/24/2009 | 66.9969 | 68.4397 | 64.9669 | 47.1863 | 65.4297 | 56.4908 | 36.552 | 31.6821 |
| 09/17/2009 | 66.4969 | 67.9397 | 64.4669 | 47.1806 | 64.8797 | 55.8908 | 35.312 | 31.4821 |
| 09/10/2009 | 66.9969 | 68.4397 | 64.9669 | 47.1682 | 64.1797 | 55.0408 | 34.672 | 31.3521 |
| 09/03/2009 | 67.9469 | 69.3897 | 65.9169 | 47.1711 | 65.3797 | 56.4408 | 35.492 | 31.2521 |
| 08/27/2009 | 68.5469 | 69.9897 | 66.5169 | 47.1762 | 65.6297 | 56.4908 | 36.172 | 31.582 |