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Loading...
| year | production | consumption |
| 1980 | .00 | .00 |
| 1981 | .00 | .00 |
| 1982 | .00 | .00 |
| 1983 | .00 | .00 |
| 1984 | 6.20 | 14.00 |
| 1985 | 6.20 | 14.00 |
| 1986 | 145.70 | 196.40 |
| 1987 | 145.50 | 245.50 |
| 1988 | 181.70 | 281.90 |
| 1989 | 157.60 | 283.20 |
| 1990 | 183.60 | 300.10 |
| 1991 | 178.90 | 315.40 |
| 1992 | 194.80 | 330.60 |
| 1993 | 197.20 | 315.90 |
| 1994 | 210.50 | 368.20 |
| 1995 | 210.30 | 379.30 |
| 1996 | 202.20 | 393.40 |
| 1997 | 207.20 | 392.30 |
| 1998 | 222.20 | 375.50 |
| 1999 | 312.60 | 438.30 |
| 2000 | 239.20 | 455.50 |
| 2001 | 326.90 | 448.50 |
| 2002 | 339.30 | 444.10 |
| 2003 | 335.70 | 401.90 |
| 2004 | 357.60 | 465.20 |
| 2005 | 327.80 | 417.40 |
| 2006 | 275.00 | 486.60 |
| 2007 | 244.10 | 541.00 |
| 2008 | 213.70 | 464.70 |
| 2009 | 263.80 | 514.00 |
| 2010 | 251.50 | 543.20 |
| 2011 | 250.10 | 546.60 |
| 2012 | 264.60 | 588.80 |
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