|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | 8.55 | NA |
| 1988 | | NA |
| 1989 | 6.58 | NA |
| 1990 | 56.65 | 760.73 % |
| 1991 | 55.98 | -1.19 % |
| 1992 | 53.34 | -4.71 % |
| 1993 | 53.19 | -0.29 % |
| 1994 | 51.66 | -2.88 % |
| 1995 | 56.72 | 9.81 % |
| 1996 | 61.98 | 9.26 % |
| 1997 | 60.70 | -2.06 % |
| 1998 | 66.04 | 8.80 % |
| 1999 | 65.63 | -0.63 % |
| 2000 | 3.08 | -95.30 % |
| 2001 | 3.94 | 27.75 % |
| 2002 | 3.95 | 0.17 % |
| 2003 | 3.71 | -6.07 % |
| 2004 | 1.88 | -49.28 % |
| 2005 | 1.06 | -43.67 % |
| 2006 | .64 | -40.00 % |
| 2007 | .42 | -33.33 % |
| 2008 | .38 | -10.00 % |
| 2009 | .38 | 0.00 % |
| 2010 | .40 | 5.55 % |
|
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