|
| year | consumption | change |
| 1984 | 1,110.56 | NA |
| 1985 | 950.94 | -14.37 % |
| 1986 | 865.68 | -8.97 % |
| 1987 | 828.48 | -4.30 % |
| 1988 | 850.48 | 2.66 % |
| 1989 | 868.33 | 2.10 % |
| 1990 | 898.28 | 3.45 % |
| 1991 | 850.37 | -5.33 % |
| 1992 | 859.59 | 1.08 % |
| 1993 | 809.15 | -5.87 % |
| 1994 | 874.62 | 8.09 % |
| 1995 | 795.62 | -9.03 % |
| 1996 | 748.54 | -5.92 % |
| 1997 | 720.99 | -3.68 % |
| 1998 | 709.01 | -1.66 % |
| 1999 | 698.46 | -1.49 % |
| 2000 | 653.24 | -6.47 % |
| 2001 | 598.68 | -8.35 % |
| 2002 | 568.97 | -4.96 % |
| 2003 | 660.75 | 16.13 % |
| 2004 | 590.44 | -10.64 % |
| 2005 | 581.50 | -1.52 % |
| 2006 | 545.50 | -6.19 % |
| 2007 | 524.95 | -3.77 % |
| 2008 | 535.83 | 2.07 % |
| 2009 | 407.30 | -23.99 % |
| 2010 | 397.65 | -2.37 % |
|
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