|
| year | consumption | change |
| 1980 | 44,974.30 | NA |
| 1981 | 48,465.26 | 7.76 % |
| 1982 | 48,614.69 | 0.31 % |
| 1983 | 57,344.33 | 17.96 % |
| 1984 | 57,805.10 | 0.80 % |
| 1985 | 60,348.24 | 4.40 % |
| 1986 | 62,070.05 | 2.85 % |
| 1987 | 67,078.95 | 8.07 % |
| 1988 | 76,168.61 | 13.55 % |
| 1989 | 77,723.98 | 2.04 % |
| 1990 | 51,971.78 | -33.13 % |
| 1991 | 43,321.94 | -16.64 % |
| 1992 | 48,619.65 | 12.23 % |
| 1993 | 48,853.34 | 0.48 % |
| 1994 | 49,507.01 | 1.34 % |
| 1995 | 50,193.75 | 1.39 % |
| 1996 | 50,123.20 | -0.14 % |
| 1997 | 42,065.30 | -16.08 % |
| 1998 | 34,568.48 | -17.82 % |
| 1999 | 30,790.86 | -10.93 % |
| 2000 | 35,648.75 | 15.78 % |
| 2001 | 38,170.84 | 7.07 % |
| 2002 | 38,363.74 | 0.51 % |
| 2003 | 41,821.69 | 9.01 % |
| 2004 | 40,411.84 | -3.37 % |
| 2005 | 40,325.86 | -0.21 % |
| 2006 | 45,193.66 | 12.07 % |
| 2007 | 44,505.82 | -1.52 % |
| 2008 | 44,472.75 | -0.07 % |
| 2009 | 38,683.41 | -13.02 % |
| 2010 | 35,946.38 | -7.08 % |
| 2011 | 41,750.04 | 16.15 % |
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