U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves Historical |
|---|
| 2008 | Released October 2009 |
| 2007 | Released February 2009 |
| 2006 | Released December 2007 |
| 2005 | Released December 2006 |
| 2004 | Released December 2005 |
| 2003 | Released December 2004 |
| 2002 | Released December 2003 |
| 2001 | Released November 2002 |
| 2000 | Released December 2001 |
| 1999 | Released December 2000 |
| 1998 | Released December 1999 |
| 1997 | Released December 1998 |
| 1996 | Released November 1997 |