|
| year | production | change |
| 1980 | 6.00 | NA |
| 1981 | 6.00 | 0.00 % |
| 1982 | 7.00 | 16.67 % |
| 1983 | 9.00 | 28.57 % |
| 1984 | 9.00 | 0.00 % |
| 1985 | 11.00 | 22.22 % |
| 1986 | 11.00 | 0.00 % |
| 1987 | 11.00 | 0.00 % |
| 1988 | 11.00 | 0.00 % |
| 1989 | 13.00 | 18.18 % |
| 1990 | 14.00 | 7.69 % |
| 1991 | 10.00 | -28.57 % |
| 1992 | 13.45 | 34.50 % |
| 1993 | 16.34 | 21.49 % |
| 1994 | 25.00 | 53.00 % |
| 1995 | 21.00 | -16.00 % |
| 1996 | 25.00 | 19.05 % |
| 1997 | 23.99 | -4.04 % |
| 1998 | 26.98 | 12.46 % |
| 1999 | 26.76 | -0.82 % |
| 2000 | 25.80 | -3.59 % |
| 2001 | 20.00 | -22.48 % |
| 2002 | 18.82 | -5.90 % |
| 2003 | 18.00 | -4.36 % |
| 2004 | 18.40 | 2.22 % |
| 2005 | 18.00 | -2.17 % |
| 2006 | 15.00 | -16.67 % |
|
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