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year | production | consumption |
1980 | 3.99 | .48 |
1981 | 2.63 | .35 |
1982 | 1.95 | .35 |
1983 | 2.51 | .39 |
1984 | 2.76 | .41 |
1985 | 2.44 | .40 |
1986 | 3.36 | .45 |
1987 | 3.77 | .54 |
1988 | 3.63 | .62 |
1989 | 4.32 | .70 |
1990 | 2.83 | .45 |
1991 | .43 | .22 |
1992 | 2.44 | .35 |
1993 | 4.28 | .48 |
1994 | 4.73 | .57 |
1995 | 4.81 | .59 |
1996 | 4.94 | .75 |
1997 | 4.85 | .80 |
1998 | 5.02 | .85 |
1999 | 4.60 | .86 |
2000 | 5.04 | .91 |
2001 | 4.81 | .88 |
2002 | 4.58 | .89 |
2003 | 5.14 | .96 |
2004 | 5.71 | 1.01 |
2005 | 6.11 | 1.15 |
2006 | 6.13 | 1.14 |
2007 | 5.97 | 1.16 |
2008 | 6.28 | 1.23 |
2009 | 5.68 | 1.21 |
2010 | 5.62 | 1.34 |
2011 | 6.19 | 1.50 |
2012 | 6.52 | 1.54 |
2013 | 6.56 | 1.59 |
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