|
| year | production | change |
| 1984 | 10.65 | NA |
| 1985 | 10.42 | -2.12 % |
| 1986 | 9.66 | -7.31 % |
| 1987 | 10.39 | 7.57 % |
| 1988 | 10.93 | 5.17 % |
| 1989 | 10.68 | -2.31 % |
| 1990 | 10.52 | -1.49 % |
| 1991 | 9.78 | -7.01 % |
| 1992 | 10.17 | 4.00 % |
| 1993 | 10.04 | -1.29 % |
| 1994 | 9.63 | -4.15 % |
| 1995 | 6.71 | -30.34 % |
| 1996 | 2.66 | -60.28 % |
| 1997 | 2.29 | -14.02 % |
| 1998 | 2.23 | -2.75 % |
| 1999 | 2.32 | 4.31 % |
| 2000 | 2.38 | 2.55 % |
| 2001 | 2.52 | 5.56 % |
| 2002 | 2.86 | 13.73 % |
| 2003 | 2.96 | 3.35 % |
| 2004 | 2.85 | -3.51 % |
| 2005 | 2.61 | -8.66 % |
| 2006 | 2.58 | -1.16 % |
| 2007 | 2.64 | 2.45 % |
| 2008 | 2.73 | 3.45 % |
| 2009 | 2.26 | -17.29 % |
| 2010 | 2.45 | 8.50 % |
|
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