|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 83.20 | NA |
| 1987 | 84.70 | 1.80 % |
| 1988 | 88.76 | 4.79 % |
| 1989 | 98.00 | 10.41 % |
| 1990 | 98.00 | 0.00 % |
| 1991 | 105.20 | 7.35 % |
| 1992 | 112.69 | 7.13 % |
| 1993 | 111.71 | -0.88 % |
| 1994 | 98.89 | -11.47 % |
| 1995 | 99.00 | 0.11 % |
| 1996 | 81.38 | -17.79 % |
| 1997 | 77.32 | -5.00 % |
| 1998 | 76.30 | -1.31 % |
| 1999 | 69.81 | -8.51 % |
| 2000 | 117.81 | 68.77 % |
| 2001 | 150.81 | 28.01 % |
| 2002 | 154.78 | 2.63 % |
| 2003 | 150.27 | -2.91 % |
| 2004 | 149.34 | -0.61 % |
| 2005 | 154.87 | 3.70 % |
| 2006 | 149.47 | -3.49 % |
| 2007 | 142.07 | -4.96 % |
| 2008 | 163.71 | 15.23 % |
| 2009 | 163.80 | 0.06 % |
| 2010 | 135.05 | -17.55 % |
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