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Loading...
| year | production | consumption |
| 1980 | 57.00 | 51.00 |
| 1981 | 58.00 | 55.00 |
| 1982 | 60.00 | 56.00 |
| 1983 | 64.00 | 59.00 |
| 1984 | 70.00 | 63.00 |
| 1985 | 72.00 | 65.00 |
| 1986 | 75.00 | 68.00 |
| 1987 | 77.00 | 70.00 |
| 1988 | 80.00 | 72.00 |
| 1989 | 79.00 | 71.00 |
| 1990 | 79.00 | 71.00 |
| 1991 | 75.00 | 65.00 |
| 1992 | .00 | .00 |
| 1993 | .00 | .00 |
| 1994 | .00 | .00 |
| 1995 | .00 | .00 |
| 1996 | .00 | .00 |
| 1997 | .00 | .00 |
| 1998 | .00 | .00 |
| 1999 | .00 | .00 |
| 2000 | .00 | .00 |
| 2001 | .00 | .00 |
| 2002 | .00 | .00 |
| 2003 | .00 | .00 |
| 2004 | .00 | .00 |
| 2005 | .00 | .00 |
| 2006 | .00 | .00 |
| 2007 | .00 | .00 |
| 2008 | .00 | .00 |
| 2009 | .00 | .00 |
| 2010 | .00 | .00 |
| 2011 | .00 | .00 |
| 2012 | .00 | .00 |
| 2013 | .00 | .00 |
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