|
| year | production | change |
| 1984 | 30.04 | NA |
| 1985 | 16.49 | -45.10 % |
| 1986 | 35.94 | 117.89 % |
| 1987 | 31.64 | -11.95 % |
| 1988 | 36.45 | 15.20 % |
| 1989 | 38.65 | 6.04 % |
| 1990 | 40.52 | 4.83 % |
| 1991 | 36.65 | -9.55 % |
| 1992 | 34.33 | -6.33 % |
| 1993 | 42.28 | 23.15 % |
| 1994 | 39.68 | -6.13 % |
| 1995 | 37.48 | -5.55 % |
| 1996 | 34.33 | -8.42 % |
| 1997 | 36.22 | 5.53 % |
| 1998 | 37.11 | 2.45 % |
| 1999 | 32.06 | -13.61 % |
| 2000 | 33.33 | 3.95 % |
| 2001 | 35.15 | 5.47 % |
| 2002 | 35.75 | 1.72 % |
| 2003 | 35.57 | -0.51 % |
| 2004 | 37.96 | 6.73 % |
| 2005 | 38.52 | 1.45 % |
| 2006 | 34.61 | -10.15 % |
| 2007 | 33.28 | -3.84 % |
| 2008 | 34.59 | 3.94 % |
| 2009 | 32.93 | -4.80 % |
| 2010 | 32.14 | -2.39 % |
|
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