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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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