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year | consumption | change |
1986 | 4.50 | NA |
1987 | 4.90 | 8.89% |
1988 | 5.10 | 4.08% |
1989 | 5.70 | 11.76% |
1990 | 7.10 | 24.56% |
1991 | 6.40 | -9.86% |
1992 | 8.80 | 37.50% |
1993 | 8.30 | -5.68% |
1994 | 8.40 | 1.20% |
1995 | 7.90 | -5.95% |
1996 | 7.10 | -10.13% |
1997 | 10.00 | 40.85% |
1998 | 11.00 | 10.00% |
1999 | 12.00 | 9.09% |
2000 | 11.00 | -8.33% |
2001 | 12.00 | 9.09% |
2002 | 11.00 | -8.33% |
2003 | 11.00 | 0.00% |
2004 | 13.00 | 18.18% |
2005 | 13.00 | 0.00% |
2006 | 13.00 | 0.00% |
2007 | 13.00 | 0.00% |
2008 | 13.00 | 0.00% |
2009 | 13.00 | 0.00% |
2010 | 13.00 | 0.00% |
2011 | 13.00 | 0.00% |
2012 | 14.00 | 7.69% |
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