|
| year | consumption | change |
| 1984 | 1,369.40 | NA |
| 1985 | 1,202.30 | -12.20 % |
| 1986 | 1,418.40 | 17.97 % |
| 1987 | 1,264.40 | -10.86 % |
| 1988 | 1,377.80 | 8.97 % |
| 1989 | 1,370.05 | -0.56 % |
| 1990 | 1,228.83 | -10.31 % |
| 1991 | 1,157.87 | -5.77 % |
| 1992 | 1,094.35 | -5.49 % |
| 1993 | 1,080.17 | -1.30 % |
| 1994 | 1,020.79 | -5.50 % |
| 1995 | 851.81 | -16.55 % |
| 1996 | 848.36 | -0.40 % |
| 1997 | 796.70 | -6.09 % |
| 1998 | 887.12 | 11.35 % |
| 1999 | 830.13 | -6.42 % |
| 2000 | 908.54 | 9.45 % |
| 2001 | 811.18 | -10.72 % |
| 2002 | 699.61 | -13.75 % |
| 2003 | 772.13 | 10.37 % |
| 2004 | 864.71 | 11.99 % |
| 2005 | 919.98 | 6.39 % |
| 2006 | 688.85 | -25.12 % |
| 2007 | 722.91 | 4.94 % |
| 2008 | 622.20 | -13.93 % |
| 2009 | 511.12 | -17.85 % |
| 2010 | 535.10 | 4.69 % |
|
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