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year | consumption | change |
1980 | .54 | NA |
1981 | .53 | -3.49% |
1982 | .53 | 0.57% |
1983 | .52 | -1.70% |
1984 | .49 | -4.82% |
1985 | .48 | -2.02% |
1986 | .49 | 1.03% |
1987 | .55 | 12.27% |
1988 | .59 | 7.10% |
1989 | .66 | 11.90% |
1990 | .67 | 2.13% |
1991 | .68 | 1.04% |
1992 | .71 | 5.15% |
1993 | .79 | 10.22% |
1994 | .84 | 6.48% |
1995 | .90 | 6.92% |
1996 | .95 | 6.14% |
1997 | 1.01 | 6.52% |
1998 | 1.06 | 4.54% |
1999 | 1.12 | 5.29% |
2000 | 1.14 | 2.42% |
2001 | 1.11 | -3.24% |
2002 | 1.14 | 2.90% |
2003 | 1.17 | 2.55% |
2004 | 1.22 | 4.37% |
2005 | 1.17 | -4.19% |
2006 | 1.11 | -4.89% |
2007 | 1.15 | 3.61% |
2008 | 1.19 | 3.39% |
2009 | 1.21 | 1.43% |
2010 | 1.21 | 0.50% |
2011 | 1.21 | -0.50% |
2012 | 1.29 | 6.80% |
2013 | 1.33 | 3.03% |
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