|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 1,041.87 | NA |
| 1993 | 1,229.02 | 17.96 % |
| 1994 | 1,095.77 | -10.84 % |
| 1995 | 715.61 | -34.69 % |
| 1996 | 449.12 | -37.24 % |
| 1997 | 505.54 | 12.56 % |
| 1998 | 474.57 | -6.13 % |
| 1999 | 490.90 | 3.44 % |
| 2000 | 509.58 | 3.81 % |
| 2001 | 535.72 | 5.13 % |
| 2002 | 492.07 | -8.15 % |
| 2003 | 493.86 | 0.36 % |
| 2004 | 519.02 | 5.09 % |
| 2005 | 536.02 | 3.27 % |
| 2006 | 553.36 | 3.24 % |
| 2007 | 508.06 | -8.19 % |
| 2008 | 640.29 | 26.03 % |
| 2009 | 570.18 | -10.95 % |
| 2010 | 582.82 | 2.22 % |
|
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