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year | consumption | change |
1980 | .49 | NA |
1981 | .48 | -1.63% |
1982 | .49 | 2.28% |
1983 | .52 | 4.46% |
1984 | .56 | 7.96% |
1985 | .57 | 2.52% |
1986 | .61 | 7.72% |
1987 | .63 | 2.44% |
1988 | .67 | 6.52% |
1989 | .67 | 0.30% |
1990 | .71 | 6.10% |
1991 | .71 | -0.14% |
1992 | .69 | -2.95% |
1993 | .74 | 7.24% |
1994 | .78 | 4.86% |
1995 | .78 | 0.90% |
1996 | .77 | -1.91% |
1997 | .79 | 2.34% |
1998 | .77 | -1.78% |
1999 | .82 | 5.56% |
2000 | .83 | 1.35% |
2001 | .85 | 2.66% |
2002 | .84 | -0.94% |
2003 | .84 | -0.48% |
2004 | .88 | 4.54% |
2005 | .85 | -3.31% |
2006 | .83 | -1.89% |
2007 | .85 | 2.41% |
2008 | .85 | 0.00% |
2009 | .84 | -1.53% |
2010 | .87 | 3.35% |
2011 | .86 | -1.16% |
2012 | .83 | -3.04% |
2013 | .86 | 3.74% |
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