|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 36.38 | NA |
| 1987 | 45.07 | 23.88 % |
| 1988 | 45.07 | 0.01 % |
| 1989 | 47.80 | 6.05 % |
| 1990 | 49.31 | 3.16 % |
| 1991 | 47.03 | -4.62 % |
| 1992 | 42.85 | -8.89 % |
| 1993 | 43.28 | 1.00 % |
| 1994 | 45.08 | 4.16 % |
| 1995 | 45.32 | 0.55 % |
| 1996 | 45.26 | -0.14 % |
| 1997 | 45.38 | 0.27 % |
| 1998 | 56.63 | 24.78 % |
| 1999 | 55.23 | -2.47 % |
| 2000 | 46.21 | -16.33 % |
| 2001 | 49.00 | 6.03 % |
| 2002 | 42.11 | -14.07 % |
| 2003 | 43.56 | 3.44 % |
| 2004 | 44.93 | 3.15 % |
| 2005 | 45.48 | 1.22 % |
| 2006 | 54.25 | 19.29 % |
| 2007 | 48.03 | -11.47 % |
| 2008 | 44.86 | -6.60 % |
| 2009 | 42.06 | -6.24 % |
| 2010 | 18.96 | -54.91 % |
|
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