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year | consumption | change |
1980 | 1.10 | NA |
1981 | 2.50 | 127.27 % |
1982 | 2.40 | -4.00 % |
1983 | 2.70 | 12.50 % |
1984 | 4.40 | 62.96 % |
1985 | 4.50 | 2.27 % |
1986 | 4.50 | 0.00 % |
1987 | 4.50 | 0.00 % |
1988 | 4.60 | 2.22 % |
1989 | 4.70 | 2.17 % |
1990 | 4.90 | 4.26 % |
1991 | 4.90 | 0.00 % |
1992 | 5.10 | 4.08 % |
1993 | 4.60 | -9.80 % |
1994 | 4.70 | 2.17 % |
1995 | 4.80 | 2.13 % |
1996 | 4.80 | 0.00 % |
1997 | 4.80 | 0.00 % |
1998 | 4.90 | 2.08 % |
1999 | 4.90 | 0.00 % |
2000 | 5.20 | 6.12 % |
2001 | 5.20 | 0.00 % |
2002 | 5.30 | 1.92 % |
2003 | 5.30 | 0.00 % |
2004 | 5.20 | -1.89 % |
2005 | 5.50 | 5.77 % |
2006 | 5.60 | 1.82 % |
2007 | 5.10 | -8.93 % |
2008 | 5.10 | 0.00 % |
2009 | 5.30 | 3.92 % |
2010 | 5.30 | 0.00 % |
2011 | 5.30 | 0.00 % |
2012 | 5.30 | 0.00 % |
2013 | 5.30 | 0.00 % |
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