|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 185.59 | NA |
| 1987 | 180.72 | -2.62 % |
| 1988 | 185.86 | 2.84 % |
| 1989 | 180.59 | -2.83 % |
| 1990 | 197.57 | 9.40 % |
| 1991 | 187.75 | -4.97 % |
| 1992 | 179.01 | -4.65 % |
| 1993 | 176.54 | -1.38 % |
| 1994 | 189.80 | 7.51 % |
| 1995 | 178.19 | -6.12 % |
| 1996 | 171.42 | -3.79 % |
| 1997 | 209.28 | 22.08 % |
| 1998 | 220.46 | 5.34 % |
| 1999 | 207.13 | -6.05 % |
| 2000 | 187.09 | -9.67 % |
| 2001 | 187.34 | 0.13 % |
| 2002 | 160.21 | -14.48 % |
| 2003 | 157.84 | -1.48 % |
| 2004 | 190.64 | 20.78 % |
| 2005 | 179.75 | -5.72 % |
| 2006 | 191.21 | 6.38 % |
| 2007 | 191.59 | 0.20 % |
| 2008 | 163.71 | -14.55 % |
| 2009 | 137.19 | -16.20 % |
| 2010 | 147.14 | 7.25 % |
|
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