|
| year | production | change |
| 1980 | 41.89 | NA |
| 1981 | 61.73 | 47.37 % |
| 1982 | 73.85 | 19.64 % |
| 1983 | 78.26 | 5.97 % |
| 1984 | 95.90 | 22.54 % |
| 1985 | 94.80 | -1.15 % |
| 1986 | 108.03 | 13.95 % |
| 1987 | 81.57 | -24.49 % |
| 1988 | 71.65 | -12.16 % |
| 1989 | 71.65 | 0.00 % |
| 1990 | 76.06 | 6.15 % |
| 1991 | 82.67 | 8.70 % |
| 1992 | 80.47 | -2.67 % |
| 1993 | 63.93 | -20.55 % |
| 1994 | 58.42 | -8.62 % |
| 1995 | 63.93 | 9.43 % |
| 1996 | 58.42 | -8.62 % |
| 1997 | 54.01 | -7.55 % |
| 1998 | 57.32 | 6.12 % |
| 1999 | 207.23 | 261.54 % |
| 2000 | 639.34 | 208.51 % |
| 2001 | 707.68 | 10.69 % |
| 2002 | 536.83 | -24.14 % |
| 2003 | 943.58 | 75.77 % |
| 2004 | 514.78 | -45.44 % |
| 2005 | 632.73 | 22.91 % |
| 2006 | 807.99 | 27.70 % |
| 2007 | 854.29 | 5.73 % |
| 2008 | 737.45 | -13.68 % |
| 2009 | 683.43 | -7.32 % |
| 2010 | 756.19 | 10.65 % |
| 2011 | 1,559.77 | 106.27 % |
|
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