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year | consumption | change |
1986 | .90 | NA |
1987 | .80 | -11.11% |
1988 | 1.20 | 50.00% |
1989 | 1.30 | 8.33% |
1990 | 1.30 | 0.00% |
1991 | 1.30 | 0.00% |
1992 | 1.40 | 7.69% |
1993 | 1.40 | 0.00% |
1994 | 1.40 | 0.00% |
1995 | 1.40 | 0.00% |
1996 | 1.40 | 0.00% |
1997 | 1.40 | 0.00% |
1998 | 1.50 | 7.14% |
1999 | 1.50 | 0.00% |
2000 | 1.50 | 0.00% |
2001 | 1.50 | 0.00% |
2002 | 1.50 | 0.00% |
2003 | 1.50 | 0.00% |
2004 | 1.50 | 0.00% |
2005 | 1.80 | 20.00% |
2006 | 1.60 | -11.11% |
2007 | 1.60 | 0.00% |
2008 | 1.60 | 0.00% |
2009 | 1.70 | 6.25% |
2010 | 1.70 | 0.00% |
2011 | 1.70 | 0.00% |
2012 | 1.70 | 0.00% |
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