|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 22.56 | NA |
| 1987 | 28.80 | 27.64 % |
| 1988 | 32.20 | 11.83 % |
| 1989 | 28.51 | -11.47 % |
| 1990 | 28.88 | 1.31 % |
| 1991 | 30.05 | 4.05 % |
| 1992 | 33.65 | 11.97 % |
| 1993 | 32.42 | -3.65 % |
| 1994 | 32.85 | 1.31 % |
| 1995 | 32.82 | -0.09 % |
| 1996 | 40.00 | 21.89 % |
| 1997 | 40.27 | 0.67 % |
| 1998 | 41.00 | 1.81 % |
| 1999 | 2.15 | -94.76 % |
| 2000 | 3.08 | 43.42 % |
| 2001 | 6.09 | 97.63 % |
| 2002 | 1.67 | -72.55 % |
| 2003 | 73.77 | 4,315.88 % |
| 2004 | 75.83 | 2.79 % |
| 2005 | 81.83 | 7.91 % |
| 2006 | 26.37 | -67.78 % |
| 2007 | 4.89 | -81.44 % |
| 2008 | 4.96 | 1.30 % |
| 2009 | 4.07 | -17.92 % |
| 2010 | 12.11 | 197.69 % |
|
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