|
| year | production | consumption |
| 1984 | | |
| 1985 | | |
| 1986 | 111.39 | 8.56 |
| 1987 | 110.57 | 7.26 |
| 1988 | 112.98 | 9.40 |
| 1989 | 115.70 | 14.00 |
| 1990 | 110.00 | 17.00 |
| 1991 | 115.51 | 22.66 |
| 1992 | 111.58 | 11.17 |
| 1993 | 114.29 | 10.48 |
| 1994 | 104.10 | 12.10 |
| 1995 | 108.90 | 9.51 |
| 1996 | 111.78 | 8.75 |
| 1997 | 114.47 | 6.57 |
| 1998 | 99.92 | 10.72 |
| 1999 | 109.72 | 9.38 |
| 2000 | 106.07 | 9.04 |
| 2001 | 110.76 | 8.54 |
| 2002 | 112.15 | 9.16 |
| 2003 | 118.26 | 8.71 |
| 2004 | 113.80 | 10.35 |
| 2005 | 113.30 | 10.04 |
| 2006 | 102.36 | 9.85 |
| 2007 | 100.68 | 5.42 |
| 2008 | 109.64 | 5.02 |
| 2009 | 107.99 | 10.55 |
| 2010 | 112.15 | 12.23 |
|
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