|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 9.60 | NA |
| 1987 | 9.74 | 1.48 % |
| 1988 | 9.93 | 1.89 % |
| 1989 | .87 | -91.25 % |
| 1990 | .78 | -9.76 % |
| 1991 | .85 | 7.84 % |
| 1992 | .80 | -5.02 % |
| 1993 | 2.14 | 166.52 % |
| 1994 | 2.67 | 24.75 % |
| 1995 | .97 | -63.49 % |
| 1996 | 1.42 | 45.25 % |
| 1997 | 1.40 | -1.22 % |
| 1998 | 1.69 | 21.21 % |
| 1999 | 2.14 | 26.25 % |
| 2000 | 1.35 | -36.81 % |
| 2001 | 2.54 | 88.01 % |
| 2002 | 1.44 | -43.33 % |
| 2003 | .70 | -51.47 % |
| 2004 | .95 | 35.99 % |
| 2005 | 1.19 | 24.79 % |
| 2006 | .47 | -60.71 % |
| 2007 | .17 | -63.64 % |
| 2008 | .38 | 124.88 % |
| 2009 | .25 | -33.30 % |
| 2010 | .30 | 16.66 % |
|
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