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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 | .00 | .00 |
| 1988 | .00 | .00 |
| 1989 | .00 | .00 |
| 1990 | .00 | .00 |
| 1991 | .00 | .00 |
| 1992 | 4.70 | 4.70 |
| 1993 | 5.66 | 5.66 |
| 1994 | 6.15 | 6.15 |
| 1995 | 6.29 | 6.29 |
| 1996 | 5.85 | 5.85 |
| 1997 | 7.79 | 7.79 |
| 1998 | 9.23 | 9.23 |
| 1999 | 8.31 | 8.31 |
| 2000 | 8.51 | 8.51 |
| 2001 | 8.32 | 8.32 |
| 2002 | 9.69 | 9.69 |
| 2003 | 9.75 | 9.75 |
| 2004 | 10.21 | 10.21 |
| 2005 | 9.35 | 9.35 |
| 2006 | 10.51 | 10.51 |
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