|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 42.48 | NA |
| 1987 | 43.62 | 2.68 % |
| 1988 | 44.71 | 2.48 % |
| 1989 | 66.23 | 48.14 % |
| 1990 | 87.62 | 32.29 % |
| 1991 | 108.65 | 24.01 % |
| 1992 | 126.70 | 16.62 % |
| 1993 | 142.79 | 12.69 % |
| 1994 | 160.90 | 12.69 % |
| 1995 | 180.70 | 12.30 % |
| 1996 | 181.06 | 0.20 % |
| 1997 | 166.57 | -8.00 % |
| 1998 | 146.52 | -12.04 % |
| 1999 | 147.44 | 0.62 % |
| 2000 | 119.64 | -18.85 % |
| 2001 | 89.61 | -25.10 % |
| 2002 | 92.88 | 3.65 % |
| 2003 | 97.96 | 5.47 % |
| 2004 | 117.16 | 19.60 % |
| 2005 | 183.75 | 56.83 % |
| 2006 | 117.24 | -36.20 % |
| 2007 | 115.89 | -1.15 % |
| 2008 | 62.66 | -45.93 % |
| 2009 | 60.45 | -3.53 % |
| 2010 | 62.93 | 4.11 % |
|
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