|
| year | production | consumption |
| 1980 | 0 | 13 |
| 1981 | 0 | 13.4 |
| 1982 | 0 | 13.4 |
| 1983 | 0 | 12.8 |
| 1984 | 0 | 12.1 |
| 1985 | 0 | 13.93 |
| 1986 | 0 | 13.88 |
| 1987 | 0 | 13.85 |
| 1988 | 0 | 14.21 |
| 1989 | 0 | 13.99 |
| 1990 | 0 | 13.34 |
| 1991 | 0 | 12.68 |
| 1992 | 0 | 15.12 |
| 1993 | 0 | 15.08 |
| 1994 | 0 | 16.12 |
| 1995 | 0 | 17.48 |
| 1996 | 0 | 18.53 |
| 1997 | 0 | 19.55 |
| 1998 | 0 | 22.37 |
| 1999 | 0 | 23.96 |
| 2000 | 0 | 24.02 |
| 2001 | 0 | 25.58 |
| 2002 | 0 | 25.42 |
| 2003 | 0 | 25.64 |
| 2004 | 0 | 27.17 |
| 2005 | 0 | 28.6 |
| 2006 | 0 | 27.4 |
Source: United States Energy Information Administration
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