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year | consumption | change |
1992 | .29 | NA |
1993 | .25 | -16.10% |
1994 | .24 | -3.67% |
1995 | .18 | -22.46% |
1996 | .23 | 26.78% |
1997 | .22 | -6.03% |
1998 | .22 | 0.00% |
1999 | .24 | 8.26% |
2000 | .24 | 2.12% |
2001 | .23 | -5.39% |
2002 | .19 | -15.35% |
2003 | .20 | 4.66% |
2004 | .21 | 4.46% |
2005 | .20 | -7.11% |
2006 | .19 | -2.55% |
2007 | .20 | 4.19% |
2008 | .21 | 7.04% |
2009 | .22 | 2.82% |
2010 | .20 | -7.76% |
2011 | .23 | 13.37% |
2012 | .26 | 12.23% |
2013 | .25 | -4.28% |
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