|
| year | production | change |
| 1980 | 63.90 | NA |
| 1981 | 71.70 | 12.21 % |
| 1982 | 100.40 | 40.03 % |
| 1983 | 135.50 | 34.96 % |
| 1984 | 193.90 | 43.10 % |
| 1985 | 203.70 | 5.05 % |
| 1986 | 181.00 | -11.14 % |
| 1987 | 197.40 | 9.06 % |
| 1988 | 201.70 | 2.18 % |
| 1989 | 205.00 | 1.64 % |
| 1990 | 203.00 | -0.98 % |
| 1991 | 219.72 | 8.23 % |
| 1992 | 202.21 | -7.97 % |
| 1993 | 194.98 | -3.58 % |
| 1994 | 215.63 | 10.59 % |
| 1995 | 219.64 | 1.86 % |
| 1996 | 242.89 | 10.59 % |
| 1997 | 266.99 | 9.92 % |
| 1998 | 243.36 | -8.85 % |
| 1999 | 223.71 | -8.07 % |
| 2000 | 183.89 | -17.80 % |
| 2001 | 197.59 | 7.45 % |
| 2002 | 216.93 | 9.79 % |
| 2003 | 249.35 | 14.94 % |
| 2004 | 251.72 | 0.95 % |
| 2005 | 276.41 | 9.81 % |
| 2006 | 306.12 | 10.75 % |
| 2007 | 388.71 | 26.98 % |
| 2008 | 466.29 | 19.96 % |
| 2009 | 449.82 | -3.53 % |
| 2010 | 486.01 | 8.05 % |
| 2011 | 392.00 | -19.34 % |
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