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year | consumption | change |
1980 | 7.90 | NA |
1981 | 9.20 | 16.46% |
1982 | 9.10 | -1.09% |
1983 | 8.90 | -2.20% |
1984 | 9.20 | 3.37% |
1985 | 9.10 | -1.09% |
1986 | 9.60 | 5.49% |
1987 | 7.20 | -25.00% |
1988 | 7.30 | 1.39% |
1989 | 7.40 | 1.37% |
1990 | 6.80 | -8.11% |
1991 | 4.00 | -41.18% |
1992 | 3.70 | -7.50% |
1993 | 3.90 | 5.41% |
1994 | 3.90 | 0.00% |
1995 | 3.90 | 0.00% |
1996 | 3.90 | 0.00% |
1997 | 3.90 | 0.00% |
1998 | 3.90 | 0.00% |
1999 | 3.90 | 0.00% |
2000 | 4.90 | 25.64% |
2001 | 5.10 | 4.08% |
2002 | 6.50 | 27.45% |
2003 | 6.50 | 0.00% |
2004 | 6.40 | -1.54% |
2005 | 6.50 | 1.56% |
2006 | 6.50 | 0.00% |
2007 | 5.60 | -13.85% |
2008 | 5.60 | 0.00% |
2009 | 5.40 | -3.57% |
2010 | 5.60 | 3.70% |
2011 | 5.60 | 0.00% |
2012 | 5.60 | 0.00% |
2013 | 5.60 | 0.00% |
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