|
| 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 | | NA |
| 1992 | .20 | NA |
| 1993 | .21 | 4.62 % |
| 1994 | .22 | 1.92 % |
| 1995 | .21 | -2.57 % |
| 1996 | .22 | 2.97 % |
| 1997 | .19 | -12.95 % |
| 1998 | .19 | 2.29 % |
| 1999 | .19 | -2.10 % |
| 2000 | .18 | -3.42 % |
| 2001 | .19 | 4.43 % |
| 2002 | .17 | -12.95 % |
| 2003 | .17 | 3.64 % |
| 2004 | .18 | 4.58 % |
| 2005 | .17 | -7.44 % |
| 2006 | .16 | -3.83 % |
| 2007 | .15 | -2.81 % |
| 2008 | .16 | 4.27 % |
| 2009 | .18 | 10.10 % |
| 2010 | .19 | 6.25 % |
|
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