|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 3.47 | NA |
| 1993 | 4.67 | 34.70 % |
| 1994 | 1.85 | -60.50 % |
| 1995 | .93 | -49.37 % |
| 1996 | 3.57 | 281.46 % |
| 1997 | .82 | -77.06 % |
| 1998 | 3.58 | 337.14 % |
| 1999 | 3.01 | -15.69 % |
| 2000 | 3.05 | 1.27 % |
| 2001 | 2.43 | -20.39 % |
| 2002 | 1.82 | -25.00 % |
| 2003 | 2.48 | 35.90 % |
| 2004 | 3.40 | 37.36 % |
| 2005 | 3.58 | 5.08 % |
| 2006 | 4.44 | 24.18 % |
| 2007 | 4.21 | -5.26 % |
| 2008 | 4.14 | -1.67 % |
| 2009 | 4.16 | 0.56 % |
| 2010 | 3.76 | -9.55 % |
|
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