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Loading...
| year | production | consumption |
| 1980 | .00 | 130.10 |
| 1981 | .00 | 129.10 |
| 1982 | .00 | 190.50 |
| 1983 | .00 | 172.40 |
| 1984 | .00 | 181.10 |
| 1985 | .00 | 488.10 |
| 1986 | .00 | 214.10 |
| 1987 | .00 | 403.10 |
| 1988 | .00 | 273.90 |
| 1989 | .00 | 125.00 |
| 1990 | .00 | 293.00 |
| 1991 | .00 | 424.00 |
| 1992 | .00 | 411.00 |
| 1993 | .00 | 433.00 |
| 1994 | .00 | 281.00 |
| 1995 | .00 | 290.00 |
| 1996 | .00 | 306.10 |
| 1997 | .00 | 272.00 |
| 1998 | .00 | 329.00 |
| 1999 | .00 | 254.50 |
| 2000 | .00 | 638.10 |
| 2001 | .00 | 776.00 |
| 2002 | .00 | 1,019.10 |
| 2003 | .00 | 1,173.00 |
| 2004 | .00 | 1,271.20 |
| 2005 | .00 | 1,331.20 |
| 2006 | .00 | 1,341.20 |
| 2007 | .00 | 1,453.00 |
| 2008 | .00 | 1,507.10 |
| 2009 | .00 | 1,331.40 |
| 2010 | .00 | 1,487.10 |
| 2011 | .00 | 2,160.90 |
| 2012 | .00 | 2,152.30 |
| 2013 | .00 | 2,108.20 |
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