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year | consumption | change |
1980 | .06 | NA |
1981 | .06 | 3.64% |
1982 | .06 | -1.75% |
1983 | .06 | 8.93% |
1984 | .06 | -3.28% |
1985 | .06 | 0.00% |
1986 | .06 | -1.69% |
1987 | .06 | 10.34% |
1988 | .07 | 9.38% |
1989 | .08 | 8.57% |
1990 | .07 | -2.63% |
1991 | .08 | 6.76% |
1992 | .09 | 17.72% |
1993 | .10 | 8.60% |
1994 | .10 | 1.98% |
1995 | .11 | 2.91% |
1996 | .11 | 0.94% |
1997 | .12 | 11.21% |
1998 | .12 | 2.52% |
1999 | .13 | 9.02% |
2000 | .14 | 6.02% |
2001 | .15 | 4.26% |
2002 | .15 | 4.08% |
2003 | .16 | 3.27% |
2004 | .16 | 2.53% |
2005 | .16 | -0.62% |
2006 | .17 | 7.45% |
2007 | .18 | 5.20% |
2008 | .19 | 4.95% |
2009 | .18 | -4.71% |
2010 | .19 | 1.65% |
2011 | .19 | 0.54% |
2012 | .19 | 1.61% |
2013 | .20 | 3.70% |
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