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year | consumption | change |
1986 | 2.40 | NA |
1987 | 2.50 | 4.17 % |
1988 | 2.70 | 8.00 % |
1989 | 2.90 | 7.41 % |
1990 | 2.90 | 0.00 % |
1991 | 3.00 | 3.45 % |
1992 | 3.10 | 3.33 % |
1993 | 3.10 | 0.00 % |
1994 | 3.20 | 3.23 % |
1995 | 3.10 | -3.13 % |
1996 | 3.10 | 0.00 % |
1997 | 3.10 | 0.00 % |
1998 | 3.00 | -3.23 % |
1999 | 3.00 | 0.00 % |
2000 | 3.20 | 6.67 % |
2001 | 3.10 | -3.13 % |
2002 | 3.10 | 0.00 % |
2003 | 3.20 | 3.23 % |
2004 | 3.30 | 3.13 % |
2005 | 3.40 | 3.03 % |
2006 | 3.30 | -2.94 % |
2007 | 3.30 | 0.00 % |
2008 | 3.30 | 0.00 % |
2009 | 1.60 | -51.52 % |
2010 | 1.60 | 0.00 % |
2011 | 1.60 | 0.00 % |
2012 | 1.60 | 0.00 % |
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