|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 125.32 | NA |
| 1987 | 139.20 | 11.08 % |
| 1988 | 140.70 | 1.08 % |
| 1989 | 139.10 | -1.14 % |
| 1990 | 144.55 | 3.92 % |
| 1991 | 151.16 | 4.57 % |
| 1992 | 152.34 | 0.78 % |
| 1993 | 160.05 | 5.06 % |
| 1994 | 173.43 | 8.36 % |
| 1995 | 172.15 | -0.74 % |
| 1996 | 193.45 | 12.38 % |
| 1997 | 189.16 | -2.22 % |
| 1998 | 197.46 | 4.39 % |
| 1999 | 207.48 | 5.08 % |
| 2000 | 231.87 | 11.75 % |
| 2001 | 234.21 | 1.01 % |
| 2002 | 236.02 | 0.77 % |
| 2003 | 251.95 | 6.75 % |
| 2004 | 247.46 | -1.78 % |
| 2005 | 244.81 | -1.07 % |
| 2006 | 238.02 | -2.77 % |
| 2007 | 247.20 | 3.85 % |
| 2008 | 217.22 | -12.13 % |
| 2009 | 256.07 | 17.88 % |
| 2010 | 235.70 | -7.95 % |
|
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