|
| year | consumption | change |
| 1984 | 1,898.04 | NA |
| 1985 | 1,725.99 | -9.06 % |
| 1986 | 1,969.02 | 14.08 % |
| 1987 | 1,859.70 | -5.55 % |
| 1988 | 2,001.91 | 7.65 % |
| 1989 | 2,061.54 | 2.98 % |
| 1990 | 1,804.23 | -12.48 % |
| 1991 | 1,741.45 | -3.48 % |
| 1992 | 1,663.52 | -4.48 % |
| 1993 | 1,638.78 | -1.49 % |
| 1994 | 1,622.57 | -0.99 % |
| 1995 | 1,385.32 | -14.62 % |
| 1996 | 1,399.28 | 1.01 % |
| 1997 | 1,403.38 | 0.29 % |
| 1998 | 1,552.97 | 10.66 % |
| 1999 | 1,457.16 | -6.17 % |
| 2000 | 1,551.49 | 6.47 % |
| 2001 | 1,468.25 | -5.37 % |
| 2002 | 1,275.72 | -13.11 % |
| 2003 | 1,316.89 | 3.23 % |
| 2004 | 1,392.11 | 5.71 % |
| 2005 | 1,509.80 | 8.45 % |
| 2006 | 1,111.22 | -26.40 % |
| 2007 | 1,168.98 | 5.20 % |
| 2008 | 986.00 | -15.65 % |
| 2009 | 846.33 | -14.17 % |
| 2010 | 848.12 | 0.21 % |
|
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