|
| year | consumption | change |
| 1984 | 230.41 | NA |
| 1985 | 241.76 | 4.93 % |
| 1986 | 232.02 | -4.03 % |
| 1987 | 232.58 | 0.24 % |
| 1988 | 213.19 | -8.34 % |
| 1989 | 227.18 | 6.56 % |
| 1990 | 233.50 | 2.78 % |
| 1991 | 258.86 | 10.86 % |
| 1992 | 268.69 | 3.80 % |
| 1993 | 256.97 | -4.36 % |
| 1994 | 293.02 | 14.03 % |
| 1995 | 270.07 | -7.83 % |
| 1996 | 287.90 | 6.60 % |
| 1997 | 309.92 | 7.65 % |
| 1998 | 334.35 | 7.88 % |
| 1999 | 320.02 | -4.29 % |
| 2000 | 328.67 | 2.70 % |
| 2001 | 318.31 | -3.15 % |
| 2002 | 305.35 | -4.07 % |
| 2003 | 333.02 | 9.06 % |
| 2004 | 342.13 | 2.74 % |
| 2005 | 360.23 | 5.29 % |
| 2006 | 385.98 | 7.15 % |
| 2007 | 400.91 | 3.87 % |
| 2008 | 427.69 | 6.68 % |
| 2009 | 406.84 | -4.87 % |
| 2010 | 418.43 | 2.85 % |
|
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