|
| year | production | change |
| 1984 | 12.53 | NA |
| 1985 | 6.75 | -46.16 % |
| 1986 | 12.55 | 85.99 % |
| 1987 | 20.46 | 63.04 % |
| 1988 | 24.30 | 18.74 % |
| 1989 | 27.86 | 14.65 % |
| 1990 | 27.68 | -0.65 % |
| 1991 | 29.25 | 5.68 % |
| 1992 | 28.67 | -1.96 % |
| 1993 | 30.41 | 6.06 % |
| 1994 | 32.15 | 5.70 % |
| 1995 | 31.58 | -1.76 % |
| 1996 | 29.65 | -6.10 % |
| 1997 | 33.03 | 11.39 % |
| 1998 | 36.14 | 9.41 % |
| 1999 | 35.05 | -2.99 % |
| 2000 | 40.42 | 15.29 % |
| 2001 | 38.83 | -3.92 % |
| 2002 | 41.88 | 7.85 % |
| 2003 | 41.24 | -1.52 % |
| 2004 | 35.92 | -12.92 % |
| 2005 | 36.44 | 1.46 % |
| 2006 | 37.20 | 2.08 % |
| 2007 | 35.38 | -4.88 % |
| 2008 | 36.52 | 3.22 % |
| 2009 | 35.26 | -3.47 % |
| 2010 | 39.18 | 11.13 % |
|
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