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Loading...
| year | production | change |
| 1980 | 1.40 | NA |
| 1981 | 1.10 | -21.43% |
| 1982 | 1.10 | 0.00% |
| 1983 | .60 | -45.45% |
| 1984 | 1.30 | 116.67% |
| 1985 | 1.40 | 7.69% |
| 1986 | .90 | -35.71% |
| 1987 | 1.00 | 11.11% |
| 1988 | .60 | -40.00% |
| 1989 | .50 | -16.67% |
| 1990 | .40 | -20.00% |
| 1991 | .30 | -25.00% |
| 1992 | .20 | -33.33% |
| 1993 | .10 | -50.00% |
| 1994 | .04 | -60.00% |
| 1995 | .00 | -100.00% |
| 1996 | .07 | NA |
| 1997 | .00 | -100.00% |
| 1998 | .00 | NA |
| 1999 | .00 | NA |
| 2000 | .07 | NA |
| 2001 | .00 | -100.00% |
| 2002 | .00 | NA |
| 2003 | .00 | NA |
| 2004 | .00 | NA |
| 2005 | .00 | NA |
| 2006 | .00 | NA |
| 2007 | .00 | NA |
| 2008 | .00 | NA |
| 2009 | .00 | NA |
| 2010 | .00 | NA |
| 2011 | .00 | NA |
| 2012 | .00 | NA |
| 2013 | .00 | NA |
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