|
| year | production | change |
| 1984 | 15.88 | NA |
| 1985 | 14.84 | -6.57 % |
| 1986 | 17.29 | 16.53 % |
| 1987 | 19.20 | 11.04 % |
| 1988 | 22.34 | 16.36 % |
| 1989 | 21.80 | -2.42 % |
| 1990 | 22.25 | 2.07 % |
| 1991 | 21.45 | -3.60 % |
| 1992 | 21.46 | 0.03 % |
| 1993 | 22.57 | 5.16 % |
| 1994 | 23.07 | 2.25 % |
| 1995 | 24.63 | 6.74 % |
| 1996 | 25.36 | 2.95 % |
| 1997 | 24.69 | -2.62 % |
| 1998 | 25.39 | 2.82 % |
| 1999 | 23.42 | -7.75 % |
| 2000 | 22.34 | -4.60 % |
| 2001 | 23.08 | 3.28 % |
| 2002 | 23.55 | 2.04 % |
| 2003 | 24.06 | 2.16 % |
| 2004 | 24.15 | 0.39 % |
| 2005 | 24.35 | 0.82 % |
| 2006 | 25.68 | 5.47 % |
| 2007 | 24.22 | -5.70 % |
| 2008 | 25.13 | 3.79 % |
| 2009 | 19.19 | -23.63 % |
| 2010 | 20.95 | 9.12 % |
|
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