|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 46.63 | NA |
| 1987 | 56.30 | 20.72 % |
| 1988 | 54.99 | -2.33 % |
| 1989 | 57.17 | 3.96 % |
| 1990 | 64.00 | 11.94 % |
| 1991 | 59.37 | -7.23 % |
| 1992 | 72.23 | 21.67 % |
| 1993 | 71.35 | -1.22 % |
| 1994 | 67.11 | -5.94 % |
| 1995 | 68.73 | 2.42 % |
| 1996 | 70.23 | 2.18 % |
| 1997 | 72.09 | 2.65 % |
| 1998 | 67.68 | -6.11 % |
| 1999 | 64.39 | -4.87 % |
| 2000 | 74.83 | 16.21 % |
| 2001 | 80.78 | 7.95 % |
| 2002 | 83.66 | 3.57 % |
| 2003 | 92.65 | 10.75 % |
| 2004 | 103.20 | 11.38 % |
| 2005 | 109.33 | 5.94 % |
| 2006 | 107.95 | -1.26 % |
| 2007 | 138.49 | 28.29 % |
| 2008 | 145.71 | 5.21 % |
| 2009 | 159.53 | 9.49 % |
| 2010 | 144.49 | -9.43 % |
|
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