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year | consumption | change |
1992 | .30 | NA |
1993 | .26 | -11.86 % |
1994 | .25 | -2.31 % |
1995 | .21 | -17.72 % |
1996 | .23 | 10.05 % |
1997 | .22 | -4.78 % |
1998 | .23 | 3.20 % |
1999 | .24 | 7.08 % |
2000 | .24 | -1.24 % |
2001 | .25 | 3.35 % |
2002 | .25 | 2.02 % |
2003 | .27 | 6.75 % |
2004 | .27 | 1.86 % |
2005 | .28 | 3.65 % |
2006 | .28 | -1.41 % |
2007 | .27 | -2.86 % |
2008 | .21 | -23.16 % |
2009 | .19 | -10.05 % |
2010 | .19 | 3.19 % |
2011 | .19 | -1.55 % |
2012 | .20 | 3.66 % |
2013 | .21 | 4.55 % |
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