|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 105.07 | 75.07 |
| 1987 | 112.03 | 81.80 |
| 1988 | 114.08 | 90.08 |
| 1989 | 118.08 | 94.78 |
| 1990 | 122.00 | 105.00 |
| 1991 | 92.03 | 87.95 |
| 1992 | 114.21 | 104.02 |
| 1993 | 130.89 | 112.50 |
| 1994 | 140.71 | 126.00 |
| 1995 | 141.13 | 138.06 |
| 1996 | 141.14 | 137.88 |
| 1997 | 138.44 | 111.83 |
| 1998 | 141.54 | 137.03 |
| 1999 | 136.54 | 138.58 |
| 2000 | 138.69 | 122.16 |
| 2001 | 135.09 | 126.77 |
| 2002 | 162.30 | 128.36 |
| 2003 | 68.07 | 117.44 |
| 2004 | 100.08 | 121.07 |
| 2005 | 104.41 | 122.31 |
| 2006 | 98.97 | 121.76 |
| 2007 | 102.09 | 168.09 |
| 2008 | 135.57 | 174.13 |
| 2009 | 130.33 | 176.24 |
| 2010 | 102.29 | 213.12 |
|
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