|
| year | production | change |
| 1980 | 3,158.12 | NA |
| 1981 | 3,374.18 | 6.84 % |
| 1982 | 3,634.32 | 7.71 % |
| 1983 | 3,352.13 | -7.76 % |
| 1984 | 3,227.57 | -3.72 % |
| 1985 | 3,396.22 | 5.23 % |
| 1986 | 3,272.76 | -3.64 % |
| 1987 | 3,071.04 | -6.16 % |
| 1988 | 2,346.82 | -23.58 % |
| 1989 | 2,277.38 | -2.96 % |
| 1990 | 2,698.46 | 18.49 % |
| 1991 | 2,293.91 | -14.99 % |
| 1992 | 1,952.19 | -14.90 % |
| 1993 | 1,864.01 | -4.52 % |
| 1994 | 1,509.06 | -19.04 % |
| 1995 | 1,430.80 | -5.19 % |
| 1996 | 1,222.46 | -14.56 % |
| 1997 | 1,246.71 | 1.98 % |
| 1998 | 1,257.74 | 0.88 % |
| 1999 | 1,254.43 | -0.26 % |
| 2000 | 1,376.79 | 9.75 % |
| 2001 | 1,329.39 | -3.44 % |
| 2002 | 1,556.46 | 17.08 % |
| 2003 | 1,269.86 | -18.41 % |
| 2004 | 259.04 | -79.60 % |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
| 2011 | | NA |
|
|
