|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.80 | NA |
| 1987 | 2.48 | 37.66 % |
| 1988 | 2.22 | -10.33 % |
| 1989 | 2.27 | 2.07 % |
| 1990 | 1.70 | -25.09 % |
| 1991 | 1.28 | -24.49 % |
| 1992 | 1.58 | 23.58 % |
| 1993 | 1.61 | 1.71 % |
| 1994 | 2.38 | 47.88 % |
| 1995 | 1.73 | -27.45 % |
| 1996 | 2.05 | 18.47 % |
| 1997 | 2.30 | 12.05 % |
| 1998 | .09 | -95.93 % |
| 1999 | | NA |
| 2000 | | NA |
| 2001 | 5.30 | NA |
| 2002 | | NA |
| 2003 | | NA |
| 2004 | | NA |
| 2005 | 1.99 | NA |
| 2006 | 2.45 | 23.53 % |
| 2007 | 3.08 | 25.71 % |
| 2008 | 2.41 | -21.97 % |
| 2009 | 1.99 | -17.48 % |
| 2010 | 2.52 | 27.06 % |
|
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