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year | consumption | change |
1980 | .22 | NA |
1981 | .22 | -3.59% |
1982 | .21 | -0.47% |
1983 | .22 | 3.27% |
1984 | .21 | -4.52% |
1985 | .23 | 7.11% |
1986 | .25 | 9.29% |
1987 | .25 | 1.21% |
1988 | .26 | 4.80% |
1989 | .29 | 12.21% |
1990 | .31 | 4.42% |
1991 | .31 | 2.28% |
1992 | .32 | 3.18% |
1993 | .34 | 4.94% |
1994 | .38 | 10.59% |
1995 | .37 | -1.06% |
1996 | .39 | 5.38% |
1997 | .41 | 3.32% |
1998 | .40 | -0.74% |
1999 | .43 | 6.72% |
2000 | .45 | 3.96% |
2001 | .48 | 7.85% |
2002 | .49 | 1.46% |
2003 | .49 | 0.61% |
2004 | .49 | 0.20% |
2005 | .51 | 4.27% |
2006 | .54 | 4.29% |
2007 | .55 | 2.80% |
2008 | .63 | 14.18% |
2009 | .65 | 2.87% |
2010 | .73 | 13.16% |
2011 | .76 | 3.56% |
2012 | .79 | 4.10% |
2013 | .64 | -18.40% |
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