|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.54 | NA |
| 1987 | 2.48 | -2.57 % |
| 1988 | 2.43 | -1.74 % |
| 1989 | 2.68 | 9.88 % |
| 1990 | 2.75 | 2.66 % |
| 1991 | 2.81 | 2.25 % |
| 1992 | 2.44 | -12.93 % |
| 1993 | 2.66 | 8.77 % |
| 1994 | 2.68 | 0.59 % |
| 1995 | 2.92 | 9.10 % |
| 1996 | .48 | -83.56 % |
| 1997 | 2.13 | 343.16 % |
| 1998 | .00 | -99.96 % |
| 1999 | .00 | 1.27 % |
| 2000 | | NA |
| 2001 | | NA |
| 2002 | | NA |
| 2003 | | NA |
| 2004 | .00 | NA |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | .00 | NA |
|
|
