|
| year | production | change |
| 1980 | 22,822.25 | NA |
| 1981 | 22,960.04 | 0.60 % |
| 1982 | 21,997.72 | -4.19 % |
| 1983 | 21,617.43 | -1.73 % |
| 1984 | 20,965.96 | -3.01 % |
| 1985 | 18,698.51 | -10.81 % |
| 1986 | 18,227.88 | -2.52 % |
| 1987 | 17,419.83 | -4.43 % |
| 1988 | 15,206.38 | -12.71 % |
| 1989 | 15,034.42 | -1.13 % |
| 1990 | 14,131.63 | -6.00 % |
| 1991 | 13,330.25 | -5.67 % |
| 1992 | 12,187.15 | -8.58 % |
| 1993 | 11,296.49 | -7.31 % |
| 1994 | 9,963.79 | -11.80 % |
| 1995 | 9,275.95 | -6.90 % |
| 1996 | 8,939.75 | -3.62 % |
| 1997 | 7,505.64 | -16.04 % |
| 1998 | 6,171.84 | -17.77 % |
| 1999 | 5,612.97 | -9.06 % |
| 2000 | 3,816.20 | -32.01 % |
| 2001 | 2,530.91 | -33.68 % |
| 2002 | 1,797.87 | -28.96 % |
| 2003 | 1,916.92 | 6.62 % |
| 2004 | 176.37 | -90.80 % |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
| 2011 | | NA |
|
|
