|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 53.82 | NA |
| 1987 | 61.77 | 14.78 % |
| 1988 | 76.17 | 23.32 % |
| 1989 | 89.52 | 17.53 % |
| 1990 | 88.28 | -1.39 % |
| 1991 | 93.35 | 5.75 % |
| 1992 | 116.57 | 24.87 % |
| 1993 | 126.67 | 8.67 % |
| 1994 | 190.69 | 50.54 % |
| 1995 | 206.71 | 8.40 % |
| 1996 | 262.42 | 26.95 % |
| 1997 | 290.64 | 10.76 % |
| 1998 | 375.32 | 29.13 % |
| 1999 | 361.77 | -3.61 % |
| 2000 | 461.16 | 27.47 % |
| 2001 | 459.99 | -0.25 % |
| 2002 | 520.80 | 13.22 % |
| 2003 | 587.25 | 12.76 % |
| 2004 | 658.39 | 12.12 % |
| 2005 | 649.29 | -1.38 % |
| 2006 | 727.28 | 12.01 % |
| 2007 | 740.49 | 1.82 % |
| 2008 | 675.56 | -8.77 % |
| 2009 | 695.32 | 2.92 % |
| 2010 | 740.19 | 6.45 % |
|
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