|
| year | consumption | change |
| 1980 | 113,241.80 | NA |
| 1981 | 125,306.70 | 10.65 % |
| 1982 | 132,648.40 | 5.86 % |
| 1983 | 137,095.10 | 3.35 % |
| 1984 | 147,423.40 | 7.53 % |
| 1985 | 151,607.10 | 2.84 % |
| 1986 | 156,341.50 | 3.12 % |
| 1987 | 160,973.20 | 2.96 % |
| 1988 | 164,305.60 | 2.07 % |
| 1989 | 153,102.90 | -6.82 % |
| 1990 | 152,282.50 | -0.54 % |
| 1991 | 157,202.80 | 3.23 % |
| 1992 | 160,920.50 | 2.36 % |
| 1993 | 160,018.40 | -0.56 % |
| 1994 | 174,172.60 | 8.85 % |
| 1995 | 175,452.00 | 0.73 % |
| 1996 | 177,268.00 | 1.04 % |
| 1997 | 184,060.10 | 3.83 % |
| 1998 | 174,147.40 | -5.39 % |
| 1999 | 182,704.00 | 4.91 % |
| 2000 | 188,936.00 | 3.41 % |
| 2001 | 192,584.00 | 1.93 % |
| 2002 | 185,264.60 | -3.80 % |
| 2003 | 200,122.70 | 8.02 % |
| 2004 | 212,750.60 | 6.31 % |
| 2005 | 207,762.20 | -2.34 % |
| 2006 | 210,361.40 | 1.25 % |
| 2007 | 215,662.10 | 2.52 % |
| 2008 | 230,441.40 | 6.85 % |
| 2009 | 224,113.80 | -2.75 % |
| 2010 | 222,252.00 | -0.83 % |
| 2011 | 214,578.80 | -3.45 % |
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