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Loading...
| year | production | consumption |
| 1980 | 131.00 | 131.00 |
| 1981 | 138.00 | 138.00 |
| 1982 | 160.00 | 160.00 |
| 1983 | 160.00 | 160.00 |
| 1984 | 163.00 | 163.00 |
| 1985 | 166.00 | 166.00 |
| 1986 | 176.00 | 176.00 |
| 1987 | 184.00 | 184.00 |
| 1988 | 152.00 | 152.00 |
| 1989 | 140.00 | 140.00 |
| 1990 | 116.00 | 116.00 |
| 1991 | 104.00 | 104.00 |
| 1992 | 8.80 | 8.80 |
| 1993 | 7.70 | 7.70 |
| 1994 | 6.60 | 6.60 |
| 1995 | 5.50 | 5.50 |
| 1996 | 3.30 | 3.30 |
| 1997 | 2.20 | 2.20 |
| 1998 | 2.20 | 2.20 |
| 1999 | 1.10 | 1.10 |
| 2000 | 1.10 | 1.10 |
| 2001 | 29.00 | 29.00 |
| 2002 | 23.00 | 23.00 |
| 2003 | 39.00 | 39.00 |
| 2004 | 37.00 | 37.00 |
| 2005 | 36.00 | 36.00 |
| 2006 | 39.00 | 39.00 |
| 2007 | 268.00 | 268.00 |
| 2008 | 383.00 | 383.00 |
| 2009 | 551.00 | 551.00 |
| 2010 | 799.00 | 799.00 |
| 2011 | 1,631.00 | 799.00 |
| 2012 | 1,367.00 | 827.00 |
| 2013 | 1,499.00 | 1,499.00 |
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