|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 14.31 | NA |
| 1987 | 24.29 | 69.79 % |
| 1988 | 25.18 | 3.69 % |
| 1989 | 26.90 | 6.80 % |
| 1990 | 27.97 | 3.99 % |
| 1991 | 28.16 | 0.66 % |
| 1992 | 31.60 | 12.23 % |
| 1993 | 36.98 | 17.03 % |
| 1994 | 13.71 | -62.92 % |
| 1995 | 16.13 | 17.64 % |
| 1996 | 15.86 | -1.70 % |
| 1997 | 28.66 | 80.77 % |
| 1998 | 33.21 | 15.85 % |
| 1999 | 40.38 | 21.59 % |
| 2000 | 74.42 | 84.32 % |
| 2001 | 77.91 | 4.69 % |
| 2002 | 83.47 | 7.13 % |
| 2003 | 64.41 | -22.83 % |
| 2004 | 70.40 | 9.30 % |
| 2005 | 76.02 | 7.98 % |
| 2006 | 97.13 | 27.78 % |
| 2007 | 124.96 | 28.65 % |
| 2008 | 134.12 | 7.32 % |
| 2009 | 140.67 | 4.89 % |
| 2010 | 140.42 | -0.17 % |
|
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