|
| year | consumption | change |
| 1980 | 1,873.00 | NA |
| 1981 | 1,768.00 | -5.61 % |
| 1982 | 1,578.00 | -10.75 % |
| 1983 | 1,448.00 | -8.24 % |
| 1984 | 1,507.00 | 4.07 % |
| 1985 | 1,514.00 | 0.46 % |
| 1986 | 1,518.00 | 0.26 % |
| 1987 | 1,592.00 | 4.87 % |
| 1988 | 1,666.00 | 4.65 % |
| 1989 | 1,739.00 | 4.38 % |
| 1990 | 1,722.00 | -0.98 % |
| 1991 | 1,662.00 | -3.48 % |
| 1992 | 1,709.00 | 2.83 % |
| 1993 | 1,734.00 | 1.46 % |
| 1994 | 1,755.00 | 1.21 % |
| 1995 | 1,799.00 | 2.51 % |
| 1996 | 1,853.00 | 3.00 % |
| 1997 | 1,940.00 | 4.70 % |
| 1998 | 1,931.00 | -0.46 % |
| 1999 | 2,016.00 | 4.40 % |
| 2000 | 2,013.91 | -0.10 % |
| 2001 | 2,043.17 | 1.45 % |
| 2002 | 2,065.07 | 1.07 % |
| 2003 | 2,190.71 | 6.08 % |
| 2004 | 2,281.97 | 4.17 % |
| 2005 | 2,314.98 | 1.45 % |
| 2006 | 2,228.85 | -3.72 % |
| 2007 | 2,283.32 | 2.44 % |
| 2008 | 2,231.57 | -2.27 % |
| 2009 | 2,152.72 | -3.53 % |
| 2010 | 2,257.51 | 4.87 % |
| 2011 | 2,289.31 | 1.41 % |
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