|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .28 | NA |
| 1987 | .21 | -25.00 % |
| 1988 | .14 | -33.33 % |
| 1989 | .14 | 0.00 % |
| 1990 | .08 | -40.00 % |
| 1991 | .03 | -69.79 % |
| 1992 | .03 | 3.47 % |
| 1993 | .02 | -17.82 % |
| 1994 | .01 | -30.91 % |
| 1995 | .01 | -6.77 % |
| 1996 | .01 | -7.63 % |
| 1997 | .01 | -8.72 % |
| 1998 | .01 | -15.78 % |
| 1999 | .01 | -17.93 % |
| 2000 | .01 | 3.33 % |
| 2001 | .04 | 380.76 % |
| 2002 | .01 | -79.10 % |
| 2003 | .01 | -0.36 % |
| 2004 | .04 | 388.07 % |
| 2005 | .04 | 2.74 % |
| 2006 | .01 | -67.87 % |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | .01 | NA |
| 2010 | .00 | -49.40 % |
|
|
