|
| year | consumption | change |
| 1980 | 1,725.00 | NA |
| 1981 | 1,590.00 | -7.83 % |
| 1982 | 1,590.00 | 0.00 % |
| 1983 | 1,531.00 | -3.71 % |
| 1984 | 1,825.00 | 19.20 % |
| 1985 | 1,617.00 | -11.40 % |
| 1986 | 1,637.00 | 1.24 % |
| 1987 | 1,611.00 | -1.59 % |
| 1988 | 1,692.00 | 5.03 % |
| 1989 | 1,731.00 | 2.30 % |
| 1990 | 1,776.00 | 2.60 % |
| 1991 | 1,803.00 | 1.52 % |
| 1992 | 1,815.00 | 0.67 % |
| 1993 | 1,829.00 | 0.77 % |
| 1994 | 1,833.00 | 0.22 % |
| 1995 | 1,816.00 | -0.93 % |
| 1996 | 1,852.00 | 1.98 % |
| 1997 | 1,810.00 | -2.27 % |
| 1998 | 1,792.00 | -0.99 % |
| 1999 | 1,811.00 | 1.06 % |
| 2000 | 1,765.44 | -2.52 % |
| 2001 | 1,746.99 | -1.05 % |
| 2002 | 1,738.64 | -0.48 % |
| 2003 | 1,758.76 | 1.16 % |
| 2004 | 1,785.40 | 1.51 % |
| 2005 | 1,820.29 | 1.95 % |
| 2006 | 1,805.73 | -0.80 % |
| 2007 | 1,752.86 | -2.93 % |
| 2008 | 1,725.25 | -1.58 % |
| 2009 | 1,641.35 | -4.86 % |
| 2010 | 1,630.27 | -0.68 % |
| 2011 | 1,607.88 | -1.37 % |
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