|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 24.67 | NA |
| 1987 | 19.02 | -22.89 % |
| 1988 | 30.00 | 57.70 % |
| 1989 | 28.59 | -4.70 % |
| 1990 | 30.65 | 7.21 % |
| 1991 | 30.83 | 0.57 % |
| 1992 | 31.49 | 2.16 % |
| 1993 | 29.34 | -6.83 % |
| 1994 | 30.53 | 4.05 % |
| 1995 | 28.76 | -5.81 % |
| 1996 | 29.56 | 2.77 % |
| 1997 | 29.86 | 1.05 % |
| 1998 | 31.20 | 4.47 % |
| 1999 | 15.92 | -48.98 % |
| 2000 | 36.36 | 128.42 % |
| 2001 | 31.19 | -14.21 % |
| 2002 | 35.08 | 12.47 % |
| 2003 | 35.87 | 2.27 % |
| 2004 | 35.73 | -0.40 % |
| 2005 | 32.41 | -9.28 % |
| 2006 | 36.29 | 11.97 % |
| 2007 | 29.93 | -17.52 % |
| 2008 | 47.37 | 58.25 % |
| 2009 | 37.04 | -21.81 % |
| 2010 | 48.42 | 30.73 % |
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