|
| year | production | change |
| 1984 | 56.69 | NA |
| 1985 | 57.67 | 1.72 % |
| 1986 | 55.56 | -3.65 % |
| 1987 | 56.61 | 1.89 % |
| 1988 | 57.31 | 1.23 % |
| 1989 | 65.10 | 13.58 % |
| 1990 | 64.24 | -1.31 % |
| 1991 | 61.51 | -4.25 % |
| 1992 | 52.66 | -14.40 % |
| 1993 | 59.02 | 12.10 % |
| 1994 | 57.59 | -2.43 % |
| 1995 | 61.02 | 5.96 % |
| 1996 | 61.10 | 0.14 % |
| 1997 | 61.09 | -0.02 % |
| 1998 | 54.48 | -10.82 % |
| 1999 | 56.11 | 2.98 % |
| 2000 | 46.70 | -16.76 % |
| 2001 | 46.10 | -1.28 % |
| 2002 | 54.82 | 18.90 % |
| 2003 | 60.96 | 11.20 % |
| 2004 | 56.43 | -7.44 % |
| 2005 | 47.64 | -15.57 % |
| 2006 | 62.26 | 30.68 % |
| 2007 | 50.68 | -18.60 % |
| 2008 | 50.17 | -1.00 % |
| 2009 | 47.82 | -4.69 % |
| 2010 | 58.58 | 22.50 % |
|
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