|
| year | production | change |
| 1980 | 12.71 | NA |
| 1981 | 13.95 | 9.76 % |
| 1982 | 18.00 | 29.03 % |
| 1983 | 15.50 | -13.89 % |
| 1984 | 20.00 | 29.03 % |
| 1985 | 14.00 | -30.00 % |
| 1986 | 15.00 | 7.14 % |
| 1987 | 13.40 | -10.67 % |
| 1988 | 12.36 | -7.76 % |
| 1989 | 12.72 | 2.91 % |
| 1990 | 12.00 | -5.66 % |
| 1991 | | NA |
| 1992 | 14.13 | NA |
| 1993 | 13.07 | -7.48 % |
| 1994 | 12.36 | -5.43 % |
| 1995 | 11.65 | -5.74 % |
| 1996 | 27.90 | 139.48 % |
| 1997 | 58.62 | 110.13 % |
| 1998 | 67.10 | 14.46 % |
| 1999 | 67.10 | 0.00 % |
| 2000 | 66.39 | -1.05 % |
| 2001 | 79.46 | 19.68 % |
| 2002 | 75.93 | -4.44 % |
| 2003 | 80.87 | 6.51 % |
| 2004 | 84.76 | 4.80 % |
| 2005 | 88.29 | 4.17 % |
| 2006 | 88.29 | 0.00 % |
| 2007 | 55.80 | -36.80 % |
| 2008 | 48.38 | -13.29 % |
| 2009 | 63.92 | 32.12 % |
| 2010 | 71.69 | 12.15 % |
| 2011 | 68.16 | -4.93 % |
|
|
