|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 23,604.89 | NA |
| 1993 | 17,286.45 | -26.77 % |
| 1994 | 17,102.36 | -1.06 % |
| 1995 | 14,699.32 | -14.05 % |
| 1996 | 16,571.05 | 12.73 % |
| 1997 | 16,533.57 | -0.23 % |
| 1998 | 15,362.91 | -7.08 % |
| 1999 | 14,053.37 | -8.52 % |
| 2000 | 14,658.54 | 4.31 % |
| 2001 | 14,689.40 | 0.21 % |
| 2002 | 14,393.98 | -2.01 % |
| 2003 | 17,077.01 | 18.64 % |
| 2004 | 17,114.49 | 0.22 % |
| 2005 | 16,339.56 | -4.53 % |
| 2006 | 15,504.01 | -5.11 % |
| 2007 | 18,629.06 | 20.16 % |
| 2008 | 17,415.42 | -6.51 % |
| 2009 | 15,253.78 | -12.41 % |
| 2010 | 19,761.13 | 29.55 % |
| 2011 | 20,706.92 | 4.79 % |
|
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