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year | consumption | change |
1986 | .90 | NA |
1987 | 1.20 | 33.33% |
1988 | .60 | -50.00% |
1989 | .80 | 33.33% |
1990 | .70 | -12.50% |
1991 | .60 | -14.29% |
1992 | .60 | 0.00% |
1993 | .40 | -33.33% |
1994 | .30 | -25.00% |
1995 | .20 | -33.33% |
1996 | .20 | 0.00% |
1997 | .20 | 0.00% |
1998 | .60 | 200.00% |
1999 | 1.20 | 100.00% |
2000 | 2.40 | 100.00% |
2001 | 2.10 | -12.50% |
2002 | 2.30 | 9.52% |
2003 | 2.70 | 17.39% |
2004 | 2.80 | 3.70% |
2005 | 3.20 | 14.29% |
2006 | 4.00 | 25.00% |
2007 | 3.60 | -10.00% |
2008 | 3.80 | 5.56% |
2009 | 5.00 | 31.58% |
2010 | 5.00 | 0.00% |
2011 | 4.40 | -12.00% |
2012 | 4.20 | -4.55% |
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