|
| year | production | change |
| 1980 | 8,447.18 | NA |
| 1981 | 8,299.68 | -1.75 % |
| 1982 | 7,941.38 | -4.32 % |
| 1983 | 8,210.24 | 3.39 % |
| 1984 | 8,306.18 | 1.17 % |
| 1985 | 8,559.59 | 3.05 % |
| 1986 | 8,487.09 | -0.85 % |
| 1987 | 8,600.05 | 1.33 % |
| 1988 | 8,210.81 | -4.53 % |
| 1989 | 8,297.32 | 1.05 % |
| 1990 | 7,978.54 | -3.84 % |
| 1991 | 9,035.92 | 13.25 % |
| 1992 | 32,387.46 | 258.43 % |
| 1993 | 31,958.20 | -1.33 % |
| 1994 | 31,601.12 | -1.12 % |
| 1995 | 31,492.44 | -0.34 % |
| 1996 | 31,608.86 | 0.37 % |
| 1997 | 30,227.73 | -4.37 % |
| 1998 | 30,693.61 | 1.54 % |
| 1999 | 30,952.15 | 0.84 % |
| 2000 | 30,961.40 | 0.03 % |
| 2001 | 30,972.46 | 0.04 % |
| 2002 | 31,746.70 | 2.50 % |
| 2003 | 32,679.51 | 2.94 % |
| 2004 | 33,603.78 | 2.83 % |
| 2005 | 33,342.41 | -0.78 % |
| 2006 | 33,530.29 | 0.56 % |
| 2007 | 33,015.61 | -1.53 % |
| 2008 | 33,333.16 | 0.96 % |
| 2009 | 30,584.48 | -8.25 % |
| 2010 | 33,064.23 | 8.11 % |
| 2011 | 34,266.00 | 3.63 % |
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