|
| year | production | change |
| 1984 | 15.18 | NA |
| 1985 | 16.30 | 7.38 % |
| 1986 | 21.03 | 28.98 % |
| 1987 | 22.07 | 4.95 % |
| 1988 | 22.19 | 0.54 % |
| 1989 | 23.20 | 4.57 % |
| 1990 | 23.54 | 1.46 % |
| 1991 | 32.49 | 38.01 % |
| 1992 | 35.14 | 8.16 % |
| 1993 | 45.73 | 30.15 % |
| 1994 | 38.04 | -16.82 % |
| 1995 | 102.18 | 168.62 % |
| 1996 | 117.65 | 15.14 % |
| 1997 | 46.17 | -60.75 % |
| 1998 | 102.24 | 121.43 % |
| 1999 | 49.80 | -51.29 % |
| 2000 | 56.80 | 14.05 % |
| 2001 | 55.43 | -2.41 % |
| 2002 | 67.91 | 22.52 % |
| 2003 | 51.82 | -23.70 % |
| 2004 | 41.11 | -20.68 % |
| 2005 | 52.05 | 26.63 % |
| 2006 | 36.15 | -30.55 % |
| 2007 | 50.05 | 38.45 % |
| 2008 | 54.26 | 8.42 % |
| 2009 | 44.51 | -17.97 % |
| 2010 | 45.20 | 1.54 % |
|
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