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Loading...
| year | production | consumption |
| 1980 | .00 | .00 |
| 1981 | .00 | .00 |
| 1982 | .00 | .00 |
| 1983 | .00 | .00 |
| 1984 | .00 | .00 |
| 1985 | .00 | .00 |
| 1986 | .00 | .00 |
| 1987 | 2.17 | 2.17 |
| 1988 | 1.29 | 1.29 |
| 1989 | 1.36 | 1.36 |
| 1990 | 1.32 | 1.32 |
| 1991 | 1.03 | 1.03 |
| 1992 | 1.02 | 1.02 |
| 1993 | 1.50 | 1.50 |
| 1994 | 2.10 | 2.10 |
| 1995 | 2.32 | 2.32 |
| 1996 | 2.57 | 2.57 |
| 1997 | 3.10 | 3.10 |
| 1998 | 3.91 | 3.91 |
| 1999 | 4.60 | 4.60 |
| 2000 | 5.01 | 5.01 |
| 2001 | 5.72 | 5.72 |
| 2002 | 6.54 | 6.54 |
| 2003 | 9.73 | 9.73 |
| 2004 | 10.83 | 10.83 |
| 2005 | 13.86 | 13.86 |
| 2006 | 15.34 | 15.34 |
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