NYMEX History
| Month/Year | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |
| Jan | $2.555 | $4.988 | $6.15 | $6.213 | $11.431 | $5.838 | $7.172 | $6.136 | $5.814 | $4.216 | $3.084 |
| Feb | $2.006 | $5.66 | $5.775 | $6.288 | $8.4 | $6.917 | $7.996 | $4.476 | $5.274 | $4.316 | $2.678 |
| Mar | $2.388 | $9.133 | $5.15 | $6.304 | $7.112 | $7.547 | $8.93 | $4.056 | $4.816 | $3.793 | $2.446 |
| Apr | $3.472 | $5.146 | $5.365 | $7.323 | $7.233 | $7.558 | $9.578 | $3.631 | $3.842 | $4.24 | $2.191 |
| May | $3.319 | $5.123 | $5.935 | $6.748 | $7.198 | $7.508 | $11.28 | $3.321 | $4.271 | $4.377 | $2.036 |
| Jun | $3.42 | $5.945 | $6.68 | $6.123 | $5.925 | $7.591 | $11.916 | $3.538 | $4.155 | $4.326 | - |
| Jul | $3.278 | $5.291 | $6.141 | $6.976 | $5.887 | $6.929 | $13.105 | $3.949 | $4.717 | $4.357 | - |
| Aug | $2.976 | $4.693 | $6.048 | $7.647 | $7.042 | $6.11 | $9.217 | $3.379 | $4.774 | $4.37 | - |
| Sep | $3.288 | $4.927 | $5.082 | $10.847 | $6.816 | $5.43 | $8.394 | $2.843 | $3.651 | $3.857 | - |
| Oct | $3.686 | $4.43 | $5.723 | $13.907 | $4.201 | $6.423 | $7.472 | $3.73 | $3.837 | $3.759 | - |
| Nov | $4.126 | $4.459 | $7.626 | $13.832 | $7.153 | $7.269 | $6.469 | $4.289 | $3.292 | $3.524 | - |
| Dec | $4.14 | $4.86 | $7.976 | $11.18 | $8.318 | $7.203 | $6.888 | $4.486 | $4.267 | $3.364 | - |
| AVG | $3.221 | $5.388 | $6.138 | $8.616 | $7.226 | $6.860 | $9.035 | $3.986 | $4.392 | $4.042 | $2.487 |
