|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | 6.76 | NA |
| 1988 | .61 | -90.92 % |
| 1989 | .05 | -91.18 % |
| 1990 | .59 | 995.94 % |
| 1991 | .68 | 14.74 % |
| 1992 | 6.11 | 796.86 % |
| 1993 | 6.71 | 9.96 % |
| 1994 | 6.37 | -5.19 % |
| 1995 | 6.73 | 5.79 % |
| 1996 | 6.77 | 0.58 % |
| 1997 | 6.83 | 0.84 % |
| 1998 | 6.87 | 0.55 % |
| 1999 | 6.87 | 0.00 % |
| 2000 | 6.89 | 0.31 % |
| 2001 | | NA |
| 2002 | | NA |
| 2003 | | NA |
| 2004 | | NA |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
|
|
