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year | production | consumption |
1980 | 3.89 | .27 |
1981 | 3.45 | .44 |
1982 | 3.00 | .41 |
1983 | 2.91 | .51 |
1984 | 3.00 | .58 |
1985 | 3.29 | .80 |
1986 | 3.68 | .91 |
1987 | 4.21 | 1.07 |
1988 | 4.22 | 1.17 |
1989 | 4.99 | 1.27 |
1990 | 5.51 | 1.23 |
1991 | 6.24 | 1.49 |
1992 | 6.11 | 1.61 |
1993 | 5.78 | 1.51 |
1994 | 5.84 | 1.49 |
1995 | 6.14 | 1.61 |
1996 | 6.34 | 1.67 |
1997 | 6.50 | 1.77 |
1998 | 6.61 | 1.84 |
1999 | 6.25 | 1.87 |
2000 | 6.77 | 1.87 |
2001 | 6.59 | 1.89 |
2002 | 6.50 | 2.06 |
2003 | 7.13 | 2.11 |
2004 | 7.42 | 2.22 |
2005 | 7.59 | 2.59 |
2006 | 7.87 | 2.73 |
2007 | 7.92 | 3.06 |
2008 | 8.13 | 3.45 |
2009 | 7.52 | 3.44 |
2010 | 7.64 | 3.58 |
2011 | 8.46 | 3.75 |
2012 | 8.92 | 3.92 |
2013 | 8.99 | 4.00 |
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