|
| year | production | consumption |
| 1980 | 0 | 5 |
| 1981 | 0 | 3.2 |
| 1982 | 0 | 3.8 |
| 1983 | 0 | 3.7 |
| 1984 | 0 | 3.8 |
| 1985 | 0 | 4.1 |
| 1986 | 0 | 4.5 |
| 1987 | 0 | 3.85 |
| 1988 | 0 | 5.88 |
| 1989 | 0 | 5.41 |
| 1990 | 0 | 5.79 |
| 1991 | 0 | 6.45 |
| 1992 | 0 | 6.59 |
| 1993 | 0 | 6.84 |
| 1994 | 0 | 7.02 |
| 1995 | 0 | 7.01 |
| 1996 | 0 | 6.97 |
| 1997 | 0 | 7.19 |
| 1998 | 0 | 8.29 |
| 1999 | 0 | 8.29 |
| 2000 | 0 | 8.56 |
| 2001 | 0 | 9.52 |
| 2002 | 0 | 9.93 |
| 2003 | 0 | 10.69 |
| 2004 | 0 | 10.87 |
| 2005 | 0 | 11.39 |
| 2006 | 0 | 11.7 |
Source: United States Energy Information Administration
|
