|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 162.97 | NA |
| 1987 | 168.07 | 3.13 % |
| 1988 | 173.31 | 3.12 % |
| 1989 | 161.80 | -6.64 % |
| 1990 | 164.71 | 1.80 % |
| 1991 | 172.50 | 4.73 % |
| 1992 | 178.36 | 3.40 % |
| 1993 | 179.95 | 0.89 % |
| 1994 | 178.34 | -0.90 % |
| 1995 | 187.90 | 5.37 % |
| 1996 | 186.45 | -0.77 % |
| 1997 | 181.70 | -2.55 % |
| 1998 | 157.68 | -13.22 % |
| 1999 | 181.18 | 14.90 % |
| 2000 | 210.00 | 15.91 % |
| 2001 | 229.31 | 9.19 % |
| 2002 | 206.47 | -9.96 % |
| 2003 | 208.39 | 0.93 % |
| 2004 | 183.49 | -11.95 % |
| 2005 | 222.50 | 21.26 % |
| 2006 | 249.68 | 12.22 % |
| 2007 | 269.29 | 7.85 % |
| 2008 | 273.78 | 1.67 % |
| 2009 | 260.76 | -4.75 % |
| 2010 | 279.90 | 7.34 % |
|
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