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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 | .00 | .00 |
| 1993 | 56.00 | 49.00 |
| 1994 | 55.00 | 50.00 |
| 1995 | 57.00 | 53.00 |
| 1996 | 60.00 | 55.00 |
| 1997 | 61.00 | 55.00 |
| 1998 | 61.00 | 54.00 |
| 1999 | 60.00 | 52.00 |
| 2000 | 69.00 | 54.00 |
| 2001 | 70.00 | 55.00 |
| 2002 | 72.00 | 55.00 |
| 2003 | 78.00 | 57.00 |
| 2004 | 79.00 | 58.00 |
| 2005 | 77.00 | 59.00 |
| 2006 | 79.00 | 61.00 |
| 2007 | 83.00 | 61.00 |
| 2008 | 78.00 | 62.00 |
| 2009 | 77.00 | 59.00 |
| 2010 | 80.00 | 61.00 |
| 2011 | 82.00 | 60.00 |
| 2012 | 82.00 | 61.00 |
| 2013 | 81.00 | 60.00 |
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