|
| year | production | consumption |
| 1980 | | |
| 1981 | | |
| 1982 | | |
| 1983 | | |
| 1984 | | |
| 1985 | | |
| 1986 | | |
| 1987 | | |
| 1988 | | |
| 1989 | | |
| 1990 | | |
| 1991 | | |
| 1992 | 0 | 44.44 |
| 1993 | 0 | 24.72 |
| 1994 | 0 | 17.9 |
| 1995 | 0 | 24.62 |
| 1996 | 0 | 28.01 |
| 1997 | 0 | 30.72 |
| 1998 | 0 | 31.94 |
| 1999 | 0 | 32.7 |
| 2000 | 0 | 35.21 |
| 2001 | 0 | 37.09 |
| 2002 | 0 | 38.64 |
| 2003 | 0 | 39.91 |
| 2004 | 0 | 41.24 |
| 2005 | 0 | 44.4 |
| 2006 | 0 | 45.4 |
Source: United States Energy Information Administration
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