|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 24.39 | NA |
| 1987 | 27.02 | 10.76 % |
| 1988 | 38.79 | 43.57 % |
| 1989 | 42.98 | 10.80 % |
| 1990 | 36.53 | -15.02 % |
| 1991 | 36.75 | 0.61 % |
| 1992 | 42.42 | 15.43 % |
| 1993 | 39.25 | -7.48 % |
| 1994 | 44.32 | 12.91 % |
| 1995 | 41.29 | -6.83 % |
| 1996 | 40.79 | -1.21 % |
| 1997 | 48.95 | 20.02 % |
| 1998 | 45.69 | -6.67 % |
| 1999 | 51.92 | 13.64 % |
| 2000 | 47.35 | -8.79 % |
| 2001 | 49.39 | 4.29 % |
| 2002 | 47.50 | -3.81 % |
| 2003 | 31.39 | -33.92 % |
| 2004 | 45.35 | 44.49 % |
| 2005 | 46.93 | 3.48 % |
| 2006 | 41.58 | -11.41 % |
| 2007 | 30.80 | -25.93 % |
| 2008 | 37.18 | 20.73 % |
| 2009 | 28.32 | -23.81 % |
| 2010 | 46.13 | 62.88 % |
|
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