|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.75 | NA |
| 1987 | 2.25 | 28.33 % |
| 1988 | 1.85 | -18.00 % |
| 1989 | 1.67 | -9.66 % |
| 1990 | 2.72 | 63.25 % |
| 1991 | 2.46 | -9.69 % |
| 1992 | 2.82 | 14.78 % |
| 1993 | 2.33 | -17.38 % |
| 1994 | 2.52 | 7.89 % |
| 1995 | 1.81 | -27.96 % |
| 1996 | 1.44 | -20.32 % |
| 1997 | 1.15 | -20.64 % |
| 1998 | 1.23 | 7.09 % |
| 1999 | 1.15 | -6.67 % |
| 2000 | .97 | -15.30 % |
| 2001 | 1.06 | 9.30 % |
| 2002 | .94 | -11.27 % |
| 2003 | .82 | -13.04 % |
| 2004 | .67 | -18.45 % |
| 2005 | .53 | -20.80 % |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
|
|