|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 20.27 | NA |
| 1987 | 21.79 | 7.51 % |
| 1988 | 24.23 | 11.22 % |
| 1989 | 27.88 | 15.06 % |
| 1990 | 32.38 | 16.11 % |
| 1991 | 32.73 | 1.09 % |
| 1992 | 35.12 | 7.30 % |
| 1993 | 38.17 | 8.69 % |
| 1994 | 42.01 | 10.07 % |
| 1995 | 47.06 | 12.02 % |
| 1996 | 56.56 | 20.18 % |
| 1997 | 57.03 | 0.83 % |
| 1998 | 57.30 | 0.48 % |
| 1999 | 59.16 | 3.24 % |
| 2000 | 73.47 | 24.19 % |
| 2001 | 77.57 | 5.59 % |
| 2002 | 79.94 | 3.06 % |
| 2003 | 69.72 | -12.79 % |
| 2004 | 84.18 | 20.75 % |
| 2005 | 21.58 | -74.37 % |
| 2006 | 138.26 | 540.73 % |
| 2007 | 120.32 | -12.97 % |
| 2008 | 140.44 | 16.72 % |
| 2009 | 112.50 | -19.89 % |
| 2010 | 232.67 | 106.82 % |
|
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