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year | consumption | change |
1986 | 5.10 | NA |
1987 | 5.30 | 3.92% |
1988 | 5.10 | -3.77% |
1989 | 5.10 | 0.00% |
1990 | 5.40 | 5.88% |
1991 | 5.50 | 1.85% |
1992 | 5.50 | 0.00% |
1993 | 5.50 | 0.00% |
1994 | 4.20 | -23.64% |
1995 | 3.90 | -7.14% |
1996 | 2.50 | -35.90% |
1997 | 2.50 | 0.00% |
1998 | 4.60 | 84.00% |
1999 | 4.40 | -4.35% |
2000 | 4.80 | 9.09% |
2001 | .80 | -83.33% |
2002 | .80 | 0.00% |
2003 | .80 | 0.00% |
2004 | .80 | 0.00% |
2005 | .70 | -12.50% |
2006 | .50 | -28.57% |
2007 | .60 | 20.00% |
2008 | .70 | 16.67% |
2009 | .50 | -28.57% |
2010 | .80 | 60.00% |
2011 | .80 | 0.00% |
2012 | .80 | 0.00% |
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