|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 171.17 | NA |
| 1987 | 187.20 | 9.36 % |
| 1988 | 203.29 | 8.59 % |
| 1989 | 219.95 | 8.20 % |
| 1990 | 232.00 | 5.48 % |
| 1991 | 247.11 | 6.51 % |
| 1992 | 234.63 | -5.05 % |
| 1993 | 265.39 | 13.11 % |
| 1994 | 279.38 | 5.27 % |
| 1995 | 290.41 | 3.95 % |
| 1996 | 344.63 | 18.67 % |
| 1997 | 384.34 | 11.52 % |
| 1998 | 411.47 | 7.06 % |
| 1999 | 451.57 | 9.75 % |
| 2000 | 432.21 | -4.29 % |
| 2001 | 411.29 | -4.84 % |
| 2002 | 434.68 | 5.68 % |
| 2003 | 460.80 | 6.01 % |
| 2004 | 455.22 | -1.21 % |
| 2005 | 490.02 | 7.64 % |
| 2006 | 529.53 | 8.06 % |
| 2007 | 553.78 | 4.58 % |
| 2008 | 619.16 | 11.81 % |
| 2009 | 719.30 | 16.17 % |
| 2010 | 831.59 | 15.61 % |
|
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