|
| year | production | change |
| 1980 | .01 | NA |
| 1981 | .01 | 0.57 % |
| 1982 | .01 | -23.55 % |
| 1983 | .01 | -13.24 % |
| 1984 | .01 | 3.60 % |
| 1985 | .01 | 0.17 % |
| 1986 | .01 | -4.30 % |
| 1987 | .01 | 8.64 % |
| 1988 | .01 | -2.54 % |
| 1989 | .01 | -15.82 % |
| 1990 | .00 | -40.12 % |
| 1991 | .01 | 67.31 % |
| 1992 | .01 | 9.09 % |
| 1993 | .01 | 30.32 % |
| 1994 | .01 | 13.61 % |
| 1995 | .01 | -12.34 % |
| 1996 | .01 | 11.61 % |
| 1997 | .01 | 11.51 % |
| 1998 | .01 | -13.06 % |
| 1999 | .00 | -57.58 % |
| 2000 | .00 | 35.12 % |
| 2001 | .00 | -24.89 % |
| 2002 | .01 | 100.29 % |
| 2003 | .01 | 102.34 % |
| 2004 | .01 | -19.61 % |
| 2005 | .01 | -6.75 % |
| 2006 | .01 | -34.17 % |
| 2007 | .01 | -16.13 % |
| 2008 | .00 | -36.36 % |
| 2009 | .01 | 65.11 % |
| 2010 | .01 | 34.94 % |
|
|
