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year | consumption | change |
1980 | 1.16 | NA |
1981 | 1.26 | 9.07% |
1982 | 1.30 | 3.09% |
1983 | 1.38 | 5.84% |
1984 | 1.45 | 5.01% |
1985 | 1.52 | 5.25% |
1986 | 1.60 | 5.19% |
1987 | 1.68 | 5.12% |
1988 | 1.79 | 6.47% |
1989 | 2.03 | 13.05% |
1990 | 2.25 | 11.20% |
1991 | 2.45 | 8.56% |
1992 | 2.57 | 5.19% |
1993 | 2.97 | 15.35% |
1994 | 3.04 | 2.43% |
1995 | 3.27 | 7.53% |
1996 | 3.66 | 11.83% |
1997 | 3.55 | -2.82% |
1998 | 3.31 | -6.78% |
1999 | 3.64 | 9.75% |
2000 | 3.88 | 6.74% |
2001 | 3.88 | -0.10% |
2002 | 4.12 | 6.14% |
2003 | 3.90 | -5.35% |
2004 | 4.49 | 15.35% |
2005 | 4.60 | 2.34% |
2006 | 5.01 | 8.96% |
2007 | 5.21 | 4.03% |
2008 | 5.30 | 1.67% |
2009 | 5.98 | 12.76% |
2010 | 6.44 | 7.70% |
2011 | 5.87 | -8.78% |
2012 | 6.38 | 8.65% |
2013 | 6.35 | -0.38% |
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