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year | consumption | change |
1986 | 1.40 | NA |
1987 | 2.00 | 42.86 % |
1988 | 1.00 | -50.00 % |
1989 | 2.70 | 170.00 % |
1990 | 3.80 | 40.74 % |
1991 | 3.50 | -7.89 % |
1992 | 3.90 | 11.43 % |
1993 | 4.40 | 12.82 % |
1994 | 4.40 | 0.00 % |
1995 | 4.40 | 0.00 % |
1996 | 4.40 | 0.00 % |
1997 | 4.40 | 0.00 % |
1998 | 4.50 | 2.27 % |
1999 | 4.60 | 2.22 % |
2000 | 4.60 | 0.00 % |
2001 | 2.20 | -52.17 % |
2002 | 2.20 | 0.00 % |
2003 | 2.40 | 9.09 % |
2004 | 2.50 | 4.17 % |
2005 | 2.70 | 8.00 % |
2006 | 2.80 | 3.70 % |
2007 | 3.20 | 14.29 % |
2008 | 3.40 | 6.25 % |
2009 | 3.60 | 5.88 % |
2010 | 2.80 | -22.22 % |
2011 | 3.50 | 25.00 % |
2012 | 3.40 | -2.86 % |
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