|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 53.40 | 9.52 |
| 1987 | 62.95 | 10.08 |
| 1988 | 54.00 | 10.21 |
| 1989 | 55.00 | 11.26 |
| 1990 | 63.54 | 10.46 |
| 1991 | 86.47 | 12.60 |
| 1992 | 80.27 | 13.09 |
| 1993 | 85.51 | 11.54 |
| 1994 | 100.49 | 12.34 |
| 1995 | 114.51 | 15.30 |
| 1996 | 121.91 | 13.00 |
| 1997 | 117.60 | 16.57 |
| 1998 | 114.98 | 16.78 |
| 1999 | 92.52 | 15.56 |
| 2000 | 95.50 | 17.20 |
| 2001 | 121.00 | 17.20 |
| 2002 | 84.88 | 15.89 |
| 2003 | 78.29 | 15.98 |
| 2004 | 92.01 | 16.31 |
| 2005 | 114.02 | |
| 2006 | 109.82 | 17.99 |
| 2007 | 106.89 | 19.16 |
| 2008 | 217.34 | 18.93 |
| 2009 | 224.98 | 20.26 |
| 2010 | 231.06 | 20.75 |
|
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