|
| 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 | 1.79 | NA |
| 1993 | 1.90 | 6.39 % |
| 1994 | 2.04 | 7.38 % |
| 1995 | 2.15 | 5.15 % |
| 1996 | 2.15 | 0.36 % |
| 1997 | 2.18 | 1.14 % |
| 1998 | 2.39 | 9.57 % |
| 1999 | 2.39 | -0.05 % |
| 2000 | 2.41 | 1.06 % |
| 2001 | 2.65 | 10.09 % |
| 2002 | 2.45 | -7.49 % |
| 2003 | 2.46 | 0.26 % |
| 2004 | 2.55 | 3.43 % |
| 2005 | 2.50 | -1.61 % |
| 2006 | 2.59 | 3.41 % |
| 2007 | 2.67 | 2.91 % |
| 2008 | 2.79 | 4.71 % |
| 2009 | 2.55 | -8.77 % |
| 2010 | 2.51 | -1.44 % |
|
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