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year | production | consumption |
1980 | 2.80 | .79 |
1981 | 3.04 | .67 |
1982 | 3.23 | .98 |
1983 | 3.61 | 1.07 |
1984 | 3.86 | 1.15 |
1985 | 3.91 | 1.05 |
1986 | 3.97 | 1.07 |
1987 | 4.22 | 1.15 |
1988 | 4.30 | 1.22 |
1989 | 4.50 | 1.18 |
1990 | 4.75 | 1.25 |
1991 | 4.92 | 1.36 |
1992 | 5.03 | 1.30 |
1993 | 4.88 | 1.20 |
1994 | 4.74 | 1.24 |
1995 | 5.05 | 1.29 |
1996 | 5.25 | 1.26 |
1997 | 5.59 | 1.20 |
1998 | 5.75 | 1.25 |
1999 | 6.02 | 1.25 |
2000 | 6.19 | 1.24 |
2001 | 6.17 | 1.25 |
2002 | 6.39 | 1.28 |
2003 | 6.79 | 1.29 |
2004 | 6.90 | 1.25 |
2005 | 7.48 | 1.48 |
2006 | 7.42 | 1.54 |
2007 | 7.32 | 1.61 |
2008 | 7.38 | 1.74 |
2009 | 7.06 | 1.84 |
2010 | 7.12 | 1.86 |
2011 | 7.02 | 2.00 |
2012 | 7.00 | 2.11 |
2013 | 6.51 | 2.13 |
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