|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 455.55 | NA |
| 1987 | 493.33 | 8.30 % |
| 1988 | 522.88 | 5.99 % |
| 1989 | 533.85 | 2.10 % |
| 1990 | 516.11 | -3.32 % |
| 1991 | 592.65 | 14.83 % |
| 1992 | 647.30 | 9.22 % |
| 1993 | 745.80 | 15.22 % |
| 1994 | 777.96 | 4.31 % |
| 1995 | 885.61 | 13.84 % |
| 1996 | 832.10 | -6.04 % |
| 1997 | 1,269.01 | 52.51 % |
| 1998 | 1,069.46 | -15.72 % |
| 1999 | 1,265.11 | 18.29 % |
| 2000 | 1,494.77 | 18.15 % |
| 2001 | 1,705.88 | 14.12 % |
| 2002 | 1,567.97 | -8.08 % |
| 2003 | 1,716.97 | 9.50 % |
| 2004 | 1,975.81 | 15.08 % |
| 2005 | 2,168.85 | 9.77 % |
| 2006 | 2,417.00 | 11.44 % |
| 2007 | 2,551.03 | 5.55 % |
| 2008 | 2,771.56 | 8.64 % |
| 2009 | 2,815.55 | 1.59 % |
| 2010 | 3,009.82 | 6.90 % |
|
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