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Loading...
| year | production | consumption |
| 1980 | 248.00 | 268.00 |
| 1981 | 211.00 | 220.00 |
| 1982 | 205.00 | 219.00 |
| 1983 | 187.00 | 203.00 |
| 1984 | 186.00 | 166.00 |
| 1985 | 163.00 | 161.00 |
| 1986 | 155.00 | 141.00 |
| 1987 | 146.00 | 138.00 |
| 1988 | 140.00 | 138.10 |
| 1989 | 144.00 | 123.20 |
| 1990 | 102.00 | 72.30 |
| 1991 | 102.00 | 67.40 |
| 1992 | 105.00 | 64.30 |
| 1993 | 109.00 | 74.40 |
| 1994 | 124.00 | 68.60 |
| 1995 | 111.90 | 71.60 |
| 1996 | 120.40 | 78.60 |
| 1997 | 114.50 | 79.10 |
| 1998 | 114.30 | 88.80 |
| 1999 | 101.10 | 82.40 |
| 2000 | 97.10 | 76.80 |
| 2001 | 106.50 | 80.60 |
| 2002 | 90.40 | 51.60 |
| 2003 | 89.40 | 63.40 |
| 2004 | 97.30 | 73.10 |
| 2005 | 100.90 | 77.90 |
| 2006 | 80.40 | 59.90 |
| 2007 | 68.00 | 38.20 |
| 2008 | 46.00 | 19.30 |
| 2009 | 47.00 | 23.50 |
| 2010 | 32.00 | 26.30 |
| 2011 | 25.90 | 18.20 |
| 2012 | 11.90 | 11.10 |
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