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year | consumption | change |
1980 | .18 | NA |
1981 | .19 | 1.64% |
1982 | .18 | -5.38% |
1983 | .18 | 1.14% |
1984 | .18 | 2.25% |
1985 | .17 | -8.79% |
1986 | .17 | 3.61% |
1987 | .18 | 3.49% |
1988 | .18 | -1.69% |
1989 | .17 | -2.29% |
1990 | .18 | 5.85% |
1991 | .18 | -1.10% |
1992 | .18 | 1.68% |
1993 | .18 | 0.00% |
1994 | .20 | 12.09% |
1995 | .22 | 5.88% |
1996 | .19 | -10.19% |
1997 | .20 | 2.58% |
1998 | .21 | 4.52% |
1999 | .21 | -1.44% |
2000 | .21 | 0.49% |
2001 | .20 | -1.46% |
2002 | .20 | 0.00% |
2003 | .20 | -3.45% |
2004 | .23 | 15.82% |
2005 | .22 | -3.08% |
2006 | .22 | 1.82% |
2007 | .23 | 2.23% |
2008 | .15 | -34.93% |
2009 | .25 | 66.44% |
2010 | .29 | 17.74% |
2011 | .31 | 7.53% |
2012 | .35 | 10.51% |
2013 | .28 | -20.17% |
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