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year | consumption | change |
1986 | 5.30 | NA |
1987 | 6.20 | 16.98% |
1988 | 5.60 | -9.68% |
1989 | 4.80 | -14.29% |
1990 | 3.90 | -18.75% |
1991 | 3.70 | -5.13% |
1992 | 3.00 | -18.92% |
1993 | 3.30 | 10.00% |
1994 | 2.40 | -27.27% |
1995 | 2.20 | -8.33% |
1996 | 2.00 | -9.09% |
1997 | 1.60 | -20.00% |
1998 | 1.70 | 6.25% |
1999 | 1.10 | -35.29% |
2000 | .80 | -27.27% |
2001 | .60 | -25.00% |
2002 | .60 | 0.00% |
2003 | 1.50 | 150.00% |
2004 | .80 | -46.67% |
2005 | .60 | -25.00% |
2006 | .50 | -16.67% |
2007 | .90 | 80.00% |
2008 | 1.10 | 22.22% |
2009 | .80 | -27.27% |
2010 | 1.20 | 50.00% |
2011 | 1.40 | 16.67% |
2012 | 1.00 | -28.57% |
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