|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 20.30 | NA |
| 1987 | 22.20 | 9.36 % |
| 1988 | 24.89 | 12.08 % |
| 1989 | 24.06 | -3.34 % |
| 1990 | 20.26 | -15.77 % |
| 1991 | 17.97 | -11.33 % |
| 1992 | 15.59 | -13.21 % |
| 1993 | 15.63 | 0.27 % |
| 1994 | 15.66 | 0.13 % |
| 1995 | 15.21 | -2.87 % |
| 1996 | 15.16 | -0.29 % |
| 1997 | 4.37 | -71.16 % |
| 1998 | 4.16 | -4.92 % |
| 1999 | 4.57 | 9.90 % |
| 2000 | 8.26 | 80.87 % |
| 2001 | 9.75 | 18.02 % |
| 2002 | 5.97 | -38.84 % |
| 2003 | 9.08 | 52.30 % |
| 2004 | 7.87 | -13.32 % |
| 2005 | 7.47 | -5.19 % |
| 2006 | 8.59 | 15.09 % |
| 2007 | 10.63 | 23.67 % |
| 2008 | 22.41 | 110.89 % |
| 2009 | 26.00 | 16.00 % |
| 2010 | 25.04 | -3.70 % |
|
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