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year | consumption | change |
1986 | 6.80 | NA |
1987 | 6.90 | 1.47% |
1988 | 6.50 | -5.80% |
1989 | 6.60 | 1.54% |
1990 | 6.70 | 1.52% |
1991 | 6.30 | -5.97% |
1992 | 2.50 | -60.32% |
1993 | 2.50 | 0.00% |
1994 | 2.40 | -4.00% |
1995 | 2.30 | -4.17% |
1996 | 2.20 | -4.35% |
1997 | 2.10 | -4.55% |
1998 | 2.00 | -4.76% |
1999 | 2.00 | 0.00% |
2000 | 1.90 | -5.00% |
2001 | 1.80 | -5.26% |
2002 | 1.90 | 5.56% |
2003 | 1.50 | -21.05% |
2004 | 1.70 | 13.33% |
2005 | 1.90 | 11.76% |
2006 | 1.80 | -5.26% |
2007 | 1.90 | 5.56% |
2008 | 2.50 | 31.58% |
2009 | 10.00 | 300.00% |
2010 | 15.00 | 50.00% |
2011 | 15.00 | 0.00% |
2012 | 15.00 | 0.00% |
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