|
| year | production | change |
| 1984 | 24.87 | NA |
| 1985 | 29.33 | 17.93 % |
| 1986 | 26.08 | -11.07 % |
| 1987 | 19.59 | -24.88 % |
| 1988 | 29.52 | 50.67 % |
| 1989 | 34.90 | 18.23 % |
| 1990 | 37.13 | 6.39 % |
| 1991 | 37.28 | 0.41 % |
| 1992 | 80.13 | 114.92 % |
| 1993 | 87.45 | 9.14 % |
| 1994 | 88.51 | 1.21 % |
| 1995 | 114.86 | 29.77 % |
| 1996 | 140.17 | 22.03 % |
| 1997 | 196.96 | 40.51 % |
| 1998 | 171.24 | -13.06 % |
| 1999 | 248.19 | 44.94 % |
| 2000 | 240.82 | -2.97 % |
| 2001 | 206.52 | -14.25 % |
| 2002 | 173.07 | -16.19 % |
| 2003 | 178.06 | 2.88 % |
| 2004 | 139.51 | -21.65 % |
| 2005 | 122.79 | -11.99 % |
| 2006 | 113.94 | -7.21 % |
| 2007 | 81.15 | -28.77 % |
| 2008 | 87.04 | 7.26 % |
| 2009 | 98.44 | 13.09 % |
| 2010 | 108.95 | 10.68 % |
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