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year | production | consumption |
1980 | .28 | .44 |
1981 | .30 | .42 |
1982 | .27 | .36 |
1983 | .27 | .39 |
1984 | .28 | .40 |
1985 | .28 | .40 |
1986 | .27 | .41 |
1987 | .28 | .42 |
1988 | .28 | .47 |
1989 | .28 | .52 |
1990 | .32 | .59 |
1991 | .31 | .59 |
1992 | .34 | .65 |
1993 | .34 | .69 |
1994 | .34 | .74 |
1995 | .36 | .81 |
1996 | .34 | .87 |
1997 | .34 | .98 |
1998 | .30 | .97 |
1999 | .23 | 1.01 |
2000 | .28 | 1.02 |
2001 | .32 | 1.05 |
2002 | .32 | 1.07 |
2003 | .34 | 1.14 |
2004 | .31 | 1.22 |
2005 | .39 | 1.28 |
2006 | .40 | 1.31 |
2007 | .34 | 1.30 |
2008 | .36 | 1.36 |
2009 | .39 | 1.36 |
2010 | .34 | 1.32 |
2011 | .35 | 1.37 |
2012 | .33 | 1.36 |
2013 | .35 | 1.35 |
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