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year | consumption | change |
1980 | 3.11 | NA |
1981 | 2.78 | -10.40% |
1982 | 2.77 | -0.58% |
1983 | 2.74 | -0.87% |
1984 | 2.90 | 5.84% |
1985 | 3.04 | 4.58% |
1986 | 3.16 | 4.18% |
1987 | 3.24 | 2.53% |
1988 | 3.24 | 0.00% |
1989 | 3.26 | 0.62% |
1990 | 3.33 | 2.12% |
1991 | 3.52 | 5.58% |
1992 | 3.49 | -0.91% |
1993 | 3.56 | 2.12% |
1994 | 3.53 | -0.81% |
1995 | 3.58 | 1.33% |
1996 | 3.73 | 4.25% |
1997 | 3.70 | -0.83% |
1998 | 3.70 | -0.05% |
1999 | 3.69 | -0.22% |
2000 | 3.79 | 2.82% |
2001 | 3.94 | 3.77% |
2002 | 3.94 | 0.15% |
2003 | 4.00 | 1.50% |
2004 | 4.11 | 2.85% |
2005 | 4.20 | 2.19% |
2006 | 4.15 | -1.31% |
2007 | 4.24 | 2.12% |
2008 | 4.21 | -0.76% |
2009 | 4.05 | -3.76% |
2010 | 4.25 | 5.04% |
2011 | 4.05 | -4.85% |
2012 | 4.03 | -0.35% |
2013 | 3.94 | -2.38% |
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