|
| year | production | change |
| 1984 | 54.46 | NA |
| 1985 | 48.42 | -11.09 % |
| 1986 | 50.63 | 4.56 % |
| 1987 | 46.97 | -7.23 % |
| 1988 | 48.22 | 2.66 % |
| 1989 | 65.27 | 35.37 % |
| 1990 | 65.70 | 0.65 % |
| 1991 | 67.38 | 2.56 % |
| 1992 | 76.27 | 13.19 % |
| 1993 | 70.30 | -7.83 % |
| 1994 | 75.45 | 7.34 % |
| 1995 | 66.27 | -12.18 % |
| 1996 | 58.21 | -12.15 % |
| 1997 | 59.53 | 2.27 % |
| 1998 | 65.13 | 9.41 % |
| 1999 | 61.27 | -5.94 % |
| 2000 | 59.28 | -3.24 % |
| 2001 | 52.50 | -11.43 % |
| 2002 | 50.33 | -4.14 % |
| 2003 | 49.32 | -2.00 % |
| 2004 | 52.49 | 6.41 % |
| 2005 | 56.53 | 7.71 % |
| 2006 | 60.92 | 7.75 % |
| 2007 | 54.34 | -10.79 % |
| 2008 | 52.18 | -3.97 % |
| 2009 | 39.02 | -25.23 % |
| 2010 | 42.25 | 8.29 % |
|
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