|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 46.46 | NA |
| 1987 | 50.40 | 8.47 % |
| 1988 | 48.90 | -2.98 % |
| 1989 | 58.13 | 18.88 % |
| 1990 | 64.67 | 11.25 % |
| 1991 | 69.90 | 8.09 % |
| 1992 | 73.50 | 5.15 % |
| 1993 | 68.80 | -6.39 % |
| 1994 | 85.72 | 24.59 % |
| 1995 | 98.15 | 14.50 % |
| 1996 | 97.89 | -0.27 % |
| 1997 | 114.19 | 16.65 % |
| 1998 | 113.81 | -0.33 % |
| 1999 | 139.94 | 22.96 % |
| 2000 | 141.68 | 1.24 % |
| 2001 | 146.65 | 3.51 % |
| 2002 | 154.54 | 5.38 % |
| 2003 | 158.52 | 2.58 % |
| 2004 | 160.95 | 1.54 % |
| 2005 | 163.19 | 1.39 % |
| 2006 | 170.60 | 4.54 % |
| 2007 | 200.79 | 17.70 % |
| 2008 | 185.93 | -7.40 % |
| 2009 | 195.12 | 4.94 % |
| 2010 | 208.00 | 6.60 % |
|
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