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year | consumption | change |
1992 | .48 | NA |
1993 | .39 | -17.40% |
1994 | .36 | -9.90% |
1995 | .38 | 6.76% |
1996 | .36 | -4.75% |
1997 | .36 | -0.55% |
1998 | .39 | 8.91% |
1999 | .30 | -22.25% |
2000 | .30 | -2.30% |
2001 | .32 | 6.40% |
2002 | .34 | 7.59% |
2003 | .35 | 3.53% |
2004 | .35 | 0.28% |
2005 | .35 | -1.13% |
2006 | .35 | 0.00% |
2007 | .38 | 9.46% |
2008 | .38 | -1.57% |
2009 | .32 | -14.63% |
2010 | .26 | -19.94% |
2011 | .27 | 5.84% |
2012 | .27 | 0.00% |
2013 | .31 | 15.07% |
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