|
| year | consumption | change |
| 1984 | 232.74 | NA |
| 1985 | 238.82 | 2.62 % |
| 1986 | 254.58 | 6.60 % |
| 1987 | 264.14 | 3.76 % |
| 1988 | 292.40 | 10.70 % |
| 1989 | 298.06 | 1.94 % |
| 1990 | 316.05 | 6.04 % |
| 1991 | 331.30 | 4.83 % |
| 1992 | 342.85 | 3.48 % |
| 1993 | 338.83 | -1.17 % |
| 1994 | 350.76 | 3.52 % |
| 1995 | 380.82 | 8.57 % |
| 1996 | 414.64 | 8.88 % |
| 1997 | 429.23 | 3.52 % |
| 1998 | 462.43 | 7.74 % |
| 1999 | 496.80 | 7.43 % |
| 2000 | 529.15 | 6.51 % |
| 2001 | 570.49 | 7.81 % |
| 2002 | 587.14 | 2.92 % |
| 2003 | 633.23 | 7.85 % |
| 2004 | 672.11 | 6.14 % |
| 2005 | 704.96 | 4.89 % |
| 2006 | 719.91 | 2.12 % |
| 2007 | 756.18 | 5.04 % |
| 2008 | 719.56 | -4.84 % |
| 2009 | 681.52 | -5.29 % |
| 2010 | 677.60 | -0.58 % |
|
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