|
| year | production | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 19.24 | NA |
| 1987 | 14.21 | -26.16 % |
| 1988 | 17.18 | 20.88 % |
| 1989 | 20.16 | 17.39 % |
| 1990 | 23.02 | 14.16 % |
| 1991 | 25.53 | 10.92 % |
| 1992 | 9.93 | -61.12 % |
| 1993 | 33.50 | 237.52 % |
| 1994 | 28.38 | -15.30 % |
| 1995 | 32.42 | 14.25 % |
| 1996 | 31.87 | -1.71 % |
| 1997 | 20.19 | -36.65 % |
| 1998 | 22.24 | 10.13 % |
| 1999 | 23.25 | 4.57 % |
| 2000 | 8.36 | -64.03 % |
| 2001 | 7.60 | -9.10 % |
| 2002 | 7.75 | 1.95 % |
| 2003 | 12.30 | 58.74 % |
| 2004 | 6.65 | -45.93 % |
| 2005 | 8.47 | 27.33 % |
| 2006 | 6.78 | -20.00 % |
| 2007 | 6.82 | 0.62 % |
| 2008 | 6.80 | -0.31 % |
| 2009 | 6.76 | -0.62 % |
| 2010 | 6.99 | 3.45 % |
|
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