|
| year | production | change |
| 1980 | 33.73 | NA |
| 1981 | 34.35 | 1.85 % |
| 1982 | 35.77 | 4.13 % |
| 1983 | 37.81 | 5.71 % |
| 1984 | 37.96 | 0.40 % |
| 1985 | 40.42 | 6.49 % |
| 1986 | 41.51 | 2.69 % |
| 1987 | 41.98 | 1.15 % |
| 1988 | 42.12 | 0.31 % |
| 1989 | 41.34 | -1.84 % |
| 1990 | 40.17 | -2.83 % |
| 1991 | 44.88 | 11.73 % |
| 1992 | 97.45 | 117.12 % |
| 1993 | 95.74 | -1.75 % |
| 1994 | 94.01 | -1.81 % |
| 1995 | 94.15 | 0.15 % |
| 1996 | 95.12 | 1.02 % |
| 1997 | 93.64 | -1.55 % |
| 1998 | 92.97 | -0.71 % |
| 1999 | 95.02 | 2.20 % |
| 2000 | 95.73 | 0.75 % |
| 2001 | 97.35 | 1.69 % |
| 2002 | 98.67 | 1.36 % |
| 2003 | 101.14 | 2.50 % |
| 2004 | 103.82 | 2.65 % |
| 2005 | 103.31 | -0.49 % |
| 2006 | 103.05 | -0.25 % |
| 2007 | 102.50 | -0.54 % |
| 2008 | 102.68 | 0.17 % |
| 2009 | 98.69 | -3.88 % |
| 2010 | 102.07 | 3.42 % |
|
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