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year | consumption | change |
1986 | 7.90 | NA |
1987 | 8.40 | 6.33% |
1988 | 8.40 | 0.00% |
1989 | 7.10 | -15.48% |
1990 | 6.90 | -2.82% |
1991 | 7.10 | 2.90% |
1992 | 5.80 | -18.31% |
1993 | 7.00 | 20.69% |
1994 | 2.80 | -60.00% |
1995 | 4.80 | 71.43% |
1996 | 2.30 | -52.08% |
1997 | 2.10 | -8.70% |
1998 | 1.80 | -14.29% |
1999 | 1.30 | -27.78% |
2000 | 1.10 | -15.38% |
2001 | 1.00 | -9.09% |
2002 | 1.00 | 0.00% |
2003 | .30 | -70.00% |
2004 | .50 | 66.67% |
2005 | .50 | 0.00% |
2006 | .40 | -20.00% |
2007 | .40 | 0.00% |
2008 | .40 | 0.00% |
2009 | .60 | 50.00% |
2010 | .70 | 16.67% |
2011 | .50 | -28.57% |
2012 | 1.40 | 180.00% |
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