|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 24.77 | NA |
| 1987 | 20.57 | -16.97 % |
| 1988 | 24.62 | 19.73 % |
| 1989 | 24.76 | 0.56 % |
| 1990 | 29.48 | 19.07 % |
| 1991 | 30.43 | 3.23 % |
| 1992 | 29.12 | -4.31 % |
| 1993 | 24.49 | -15.90 % |
| 1994 | 35.03 | 43.01 % |
| 1995 | 39.11 | 11.65 % |
| 1996 | 39.11 | 0.00 % |
| 1997 | 35.43 | -9.41 % |
| 1998 | 39.07 | 10.29 % |
| 1999 | 41.55 | 6.34 % |
| 2000 | 37.49 | -9.78 % |
| 2001 | 33.82 | -9.78 % |
| 2002 | 40.94 | 21.04 % |
| 2003 | 41.94 | 2.44 % |
| 2004 | 38.93 | -7.18 % |
| 2005 | 34.92 | -10.28 % |
| 2006 | 36.99 | 5.90 % |
| 2007 | 34.29 | -7.30 % |
| 2008 | 54.45 | 58.81 % |
| 2009 | 41.24 | -24.26 % |
| 2010 | 49.23 | 19.38 % |
|
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