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year | production | consumption |
1980 | .66 | .64 |
1981 | .67 | .66 |
1982 | .76 | .71 |
1983 | .79 | .72 |
1984 | .93 | .80 |
1985 | 1.02 | .79 |
1986 | 1.39 | .90 |
1987 | 1.55 | .84 |
1988 | 1.62 | .91 |
1989 | 1.78 | .95 |
1990 | 1.96 | .93 |
1991 | 1.87 | .96 |
1992 | 1.90 | .98 |
1993 | 1.99 | 1.06 |
1994 | 2.01 | 1.10 |
1995 | 2.38 | 1.12 |
1996 | 2.61 | 1.19 |
1997 | 2.84 | 1.21 |
1998 | 3.05 | 1.24 |
1999 | 3.20 | 1.16 |
2000 | 3.08 | 1.16 |
2001 | 3.11 | 1.19 |
2002 | 2.91 | 1.16 |
2003 | 3.13 | 1.20 |
2004 | 3.24 | 1.23 |
2005 | 3.38 | 1.27 |
2006 | 3.61 | 1.31 |
2007 | 3.76 | 1.32 |
2008 | 4.04 | 1.36 |
2009 | 4.20 | 1.35 |
2010 | 4.53 | 1.45 |
2011 | 5.19 | 1.54 |
2012 | 5.33 | 1.58 |
2013 | 5.08 | 1.49 |
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