|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 49.59 | NA |
| 1987 | 38.48 | -22.41 % |
| 1988 | 33.59 | -12.70 % |
| 1989 | 35.31 | 5.11 % |
| 1990 | 24.00 | -32.03 % |
| 1991 | 25.00 | 4.16 % |
| 1992 | 40.93 | 63.72 % |
| 1993 | 49.05 | 19.84 % |
| 1994 | 66.33 | 35.22 % |
| 1995 | 72.29 | 8.99 % |
| 1996 | 78.35 | 8.39 % |
| 1997 | 91.75 | 17.11 % |
| 1998 | 111.02 | 21.00 % |
| 1999 | 123.01 | 10.80 % |
| 2000 | 119.44 | -2.91 % |
| 2001 | 87.52 | -26.72 % |
| 2002 | 95.92 | 9.60 % |
| 2003 | 145.74 | 51.94 % |
| 2004 | 169.69 | 16.43 % |
| 2005 | 164.96 | -2.79 % |
| 2006 | 160.49 | -2.71 % |
| 2007 | 131.52 | -18.05 % |
| 2008 | 162.18 | 23.31 % |
| 2009 | 175.07 | 7.95 % |
| 2010 | 183.45 | 4.79 % |
|
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