|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.33 | NA |
| 1987 | 2.90 | 24.55 % |
| 1988 | | NA |
| 1989 | 2.37 | NA |
| 1990 | 1.83 | -22.85 % |
| 1991 | 2.54 | 38.87 % |
| 1992 | 2.18 | -14.40 % |
| 1993 | 2.65 | 21.69 % |
| 1994 | 2.67 | 0.80 % |
| 1995 | 2.69 | 0.79 % |
| 1996 | 3.50 | 30.09 % |
| 1997 | 2.14 | -38.87 % |
| 1998 | 2.18 | 1.98 % |
| 1999 | 2.18 | 0.00 % |
| 2000 | 1.10 | -49.65 % |
| 2001 | 2.08 | 88.98 % |
| 2002 | 1.29 | -37.76 % |
| 2003 | 1.42 | 9.84 % |
| 2004 | 2.34 | 65.22 % |
| 2005 | 1.80 | -23.21 % |
| 2006 | 1.38 | -23.53 % |
| 2007 | 2.58 | 87.69 % |
| 2008 | 3.58 | 38.52 % |
| 2009 | 1.19 | -66.86 % |
| 2010 | 1.50 | 26.79 % |
|
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