|
| year | production | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | 2.51 | NA |
| 1984 | 1.41 | -43.66 % |
| 1985 | | NA |
| 1986 | 16.00 | NA |
| 1987 | 10.00 | -37.50 % |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | 7.49 | NA |
| 1991 | 7.17 | -4.25 % |
| 1992 | 6.99 | -2.46 % |
| 1993 | 7.06 | 1.01 % |
| 1994 | 7.03 | -0.50 % |
| 1995 | 6.43 | -8.54 % |
| 1996 | 7.27 | 13.19 % |
| 1997 | 8.93 | 22.82 % |
| 1998 | 19.95 | 123.32 % |
| 1999 | 25.82 | 29.38 % |
| 2000 | 22.57 | -12.59 % |
| 2001 | 11.02 | -51.17 % |
| 2002 | 13.35 | 21.15 % |
| 2003 | 19.78 | 48.15 % |
| 2004 | 24.30 | 22.86 % |
| 2005 | 31.68 | 30.38 % |
| 2006 | 31.96 | 0.89 % |
| 2007 | 31.54 | -1.33 % |
| 2008 | 35.92 | 13.89 % |
| 2009 | 24.16 | -32.74 % |
| 2010 | 24.08 | -0.29 % |
| 2011 | 26.87 | 11.58 % |
|
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