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year | consumption | change |
1980 | .71 | NA |
1981 | .83 | 16.36% |
1982 | .92 | 11.52% |
1983 | 1.06 | 14.67% |
1984 | 1.15 | 9.38% |
1985 | 1.22 | 5.55% |
1986 | 1.25 | 2.38% |
1987 | 1.30 | 3.93% |
1988 | 1.31 | 1.08% |
1989 | 1.35 | 3.36% |
1990 | 1.44 | 5.98% |
1991 | 1.43 | -0.07% |
1992 | 1.43 | -0.35% |
1993 | 1.51 | 5.74% |
1994 | 1.56 | 3.44% |
1995 | 1.60 | 2.30% |
1996 | 1.74 | 8.63% |
1997 | 1.80 | 3.57% |
1998 | 1.86 | 3.17% |
1999 | 1.93 | 4.04% |
2000 | 2.02 | 4.45% |
2001 | 2.24 | 10.91% |
2002 | 2.27 | 1.43% |
2003 | 2.44 | 7.67% |
2004 | 2.60 | 6.22% |
2005 | 2.76 | 6.28% |
2006 | 2.60 | -5.62% |
2007 | 2.76 | 5.88% |
2008 | 3.13 | 13.68% |
2009 | 3.19 | 1.76% |
2010 | 3.23 | 1.41% |
2011 | 3.41 | 5.32% |
2012 | 3.67 | 7.84% |
2013 | 3.56 | -3.02% |
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