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year | production | consumption |
1980 | 4.03 | .40 |
1981 | 2.57 | .36 |
1982 | 2.61 | .35 |
1983 | 2.52 | .38 |
1984 | 2.53 | .38 |
1985 | 2.46 | .42 |
1986 | 2.43 | .44 |
1987 | 2.29 | .45 |
1988 | 2.74 | .46 |
1989 | 2.70 | .48 |
1990 | 3.18 | .51 |
1991 | 3.43 | .53 |
1992 | 3.34 | .50 |
1993 | 3.17 | .51 |
1994 | 3.21 | .53 |
1995 | 3.23 | .55 |
1996 | 3.28 | .59 |
1997 | 3.39 | .62 |
1998 | 3.26 | .59 |
1999 | 3.07 | .56 |
2000 | 3.30 | .63 |
2001 | 3.21 | .67 |
2002 | 3.11 | .70 |
2003 | 3.30 | .68 |
2004 | 3.61 | .76 |
2005 | 3.99 | .77 |
2006 | 4.22 | .74 |
2007 | 4.37 | .73 |
2008 | 4.47 | .76 |
2009 | 4.27 | .82 |
2010 | 4.31 | .94 |
2011 | 1.32 | .57 |
2012 | 3.53 | .70 |
2013 | 2.48 | .75 |
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