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year | production | consumption |
1992 | .70 | 1.30 |
1993 | .60 | 1.20 |
1996 | .20 | .60 |
1997 | .10 | .50 |
1998 | .30 | .80 |
1999 | .20 | 1.00 |
2000 | .30 | .90 |
2001 | .40 | .70 |
2002 | .30 | 1.00 |
2003 | .70 | 1.20 |
2004 | .70 | 1.30 |
2005 | .80 | 1.50 |
2006 | 1.00 | 1.70 |
2007 | .80 | 2.00 |
2008 | .90 | 2.10 |
2009 | .90 | 2.00 |
2010 | .80 | 2.00 |
2011 | .70 | 1.80 |
2012 | .30 | 1.70 |
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