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year | consumption | change |
1992 | .22 | NA |
1993 | .24 | 6.73 % |
1994 | .25 | 3.78 % |
1995 | .28 | 12.55 % |
1996 | .31 | 10.43 % |
1997 | .29 | -6.84 % |
1998 | .29 | -0.35 % |
1999 | .29 | 1.75 % |
2000 | .29 | -1.03 % |
2001 | .30 | 3.83 % |
2002 | .30 | 0.67 % |
2003 | .30 | -0.67 % |
2004 | .31 | 5.03 % |
2005 | .32 | 0.64 % |
2006 | .32 | 0.63 % |
2007 | .31 | -0.95 % |
2008 | .34 | 7.96 % |
2009 | .31 | -9.44 % |
2010 | .31 | 1.30 % |
2011 | .29 | -5.79 % |
2012 | .29 | -2.39 % |
2013 | .28 | -3.50 % |
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