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year | consumption | change |
1986 | .00 | NA |
1987 | 1.30 | NA |
1988 | 1.40 | 7.69% |
1989 | 1.70 | 21.43% |
1990 | 1.80 | 5.88% |
1991 | 2.10 | 16.67% |
1992 | 2.10 | 0.00% |
1993 | 1.30 | -38.10% |
1994 | 2.10 | 61.54% |
1995 | 2.20 | 4.76% |
1996 | 2.20 | 0.00% |
1997 | 2.20 | 0.00% |
1998 | 2.20 | 0.00% |
1999 | 2.20 | 0.00% |
2000 | 2.20 | 0.00% |
2001 | 2.20 | 0.00% |
2002 | 2.30 | 4.55% |
2003 | 2.30 | 0.00% |
2004 | 2.90 | 26.09% |
2005 | 2.90 | 0.00% |
2006 | 2.80 | -3.45% |
2007 | 2.70 | -3.57% |
2008 | 4.00 | 48.15% |
2009 | 2.90 | -27.50% |
2010 | 2.90 | 0.00% |
2011 | 2.90 | 0.00% |
2012 | 2.90 | 0.00% |
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