|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 4.05 | NA |
| 1987 | 4.32 | 6.68 % |
| 1988 | 5.09 | 17.85 % |
| 1989 | 5.01 | -1.51 % |
| 1990 | 3.78 | -24.62 % |
| 1991 | 5.17 | 36.69 % |
| 1992 | 5.45 | 5.41 % |
| 1993 | 3.60 | -33.90 % |
| 1994 | 1.71 | -52.44 % |
| 1995 | 1.63 | -4.94 % |
| 1996 | | NA |
| 1997 | 1.37 | NA |
| 1998 | 1.06 | -22.70 % |
| 1999 | 1.84 | 73.81 % |
| 2000 | .06 | -96.56 % |
| 2001 | .23 | 267.68 % |
| 2002 | .06 | -72.73 % |
| 2003 | | NA |
| 2004 | | NA |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | .13 | NA |
|
|
