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year | consumption | change |
1986 | 2.00 | NA |
1987 | 1.90 | -5.00% |
1988 | 1.90 | 0.00% |
1989 | 2.00 | 5.26% |
1990 | 1.90 | -5.00% |
1991 | 1.20 | -36.84% |
1992 | 1.00 | -16.67% |
1993 | 1.00 | 0.00% |
1994 | 1.00 | 0.00% |
1995 | 1.00 | 0.00% |
1996 | 1.00 | 0.00% |
1997 | 1.00 | 0.00% |
1998 | 1.00 | 0.00% |
1999 | 1.00 | 0.00% |
2000 | 1.00 | 0.00% |
2001 | 1.00 | 0.00% |
2002 | 1.00 | 0.00% |
2003 | 1.00 | 0.00% |
2004 | 1.00 | 0.00% |
2005 | .90 | -10.00% |
2006 | .80 | -11.11% |
2007 | .90 | 12.50% |
2008 | .80 | -11.11% |
2009 | .80 | 0.00% |
2010 | .80 | 0.00% |
2011 | .80 | 0.00% |
2012 | .80 | 0.00% |
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