|
| year | production | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | .10 | NA |
| 1992 | 1.55 | 1,419.61 % |
| 1993 | 4.50 | 190.32 % |
| 1994 | | NA |
| 1995 | | NA |
| 1996 | 17.09 | NA |
| 1997 | 52.42 | 206.69 % |
| 1998 | 83.00 | 58.33 % |
| 1999 | 102.00 | 22.89 % |
| 2000 | 167.50 | 64.22 % |
| 2001 | 181.44 | 8.32 % |
| 2002 | 212.56 | 17.15 % |
| 2003 | 206.47 | -2.87 % |
| 2004 | 365.46 | 77.01 % |
| 2005 | 362.53 | -0.80 % |
| 2006 | 342.87 | -5.43 % |
| 2007 | 345.37 | 0.73 % |
| 2008 | 336.83 | -2.47 % |
| 2009 | 321.98 | -4.41 % |
| 2010 | 297.78 | -7.52 % |
| 2011 | 276.87 | -7.02 % |
| 2012 | 297.00 | 7.27 % |
|
|