|
| year | production | change |
| 1980 | 1,620.29 | NA |
| 1981 | 1,840.81 | 13.61 % |
| 1982 | 2,333.82 | 26.78 % |
| 1983 | 2,203.52 | -5.58 % |
| 1984 | 2,750.27 | 24.81 % |
| 1985 | 5,721.00 | 108.02 % |
| 1986 | 6,107.45 | 6.75 % |
| 1987 | 7,648.34 | 25.23 % |
| 1988 | 8,056.42 | 5.34 % |
| 1989 | 9,940.67 | 23.39 % |
| 1990 | 13,732.01 | 38.14 % |
| 1991 | 16,168.77 | 17.75 % |
| 1992 | 16,987.24 | 5.06 % |
| 1993 | 17,145.27 | 0.93 % |
| 1994 | 18,857.10 | 9.98 % |
| 1995 | 20,310.97 | 7.71 % |
| 1996 | 23,915.28 | 17.75 % |
| 1997 | 25,837.69 | 8.04 % |
| 1998 | 22,225.57 | -13.98 % |
| 1999 | 20,129.65 | -9.43 % |
| 2000 | 19,605.43 | -2.60 % |
| 2001 | 21,613.01 | 10.24 % |
| 2002 | 21,607.49 | -0.03 % |
| 2003 | 20,771.29 | -3.87 % |
| 2004 | 22,112.19 | 6.46 % |
| 2005 | 23,014.25 | 4.08 % |
| 2006 | 21,021.75 | -8.66 % |
| 2007 | 20,105.25 | -4.36 % |
| 2008 | 20,157.40 | 0.26 % |
| 2009 | 19,605.71 | -2.74 % |
| 2010 | 20,220.80 | 3.14 % |
| 2011 | 23,299.55 | 15.23 % |
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