|
| year | consumption | change |
| 1980 | 76,770.59 | NA |
| 1981 | 80,907.95 | 5.39 % |
| 1982 | 82,049.65 | 1.41 % |
| 1983 | 86,552.80 | 5.49 % |
| 1984 | 93,347.73 | 7.85 % |
| 1985 | 96,098.37 | 2.95 % |
| 1986 | 93,853.55 | -2.34 % |
| 1987 | 105,907.60 | 12.84 % |
| 1988 | 100,783.20 | -4.84 % |
| 1989 | 112,786.90 | 11.91 % |
| 1990 | 113,512.80 | 0.64 % |
| 1991 | 117,103.40 | 3.16 % |
| 1992 | 120,921.50 | 3.26 % |
| 1993 | 123,402.40 | 2.05 % |
| 1994 | 126,377.80 | 2.41 % |
| 1995 | 126,255.00 | -0.10 % |
| 1996 | 138,634.70 | 9.81 % |
| 1997 | 144,429.40 | 4.18 % |
| 1998 | 158,123.50 | 9.48 % |
| 1999 | 165,106.10 | 4.42 % |
| 2000 | 166,146.60 | 0.63 % |
| 2001 | 175,512.70 | 5.64 % |
| 2002 | 176,813.20 | 0.74 % |
| 2003 | 177,229.00 | 0.24 % |
| 2004 | 192,120.30 | 8.40 % |
| 2005 | 205,241.70 | 6.83 % |
| 2006 | 216,097.00 | 5.29 % |
| 2007 | 220,634.70 | 2.10 % |
| 2008 | 215,589.40 | -2.29 % |
| 2009 | 223,933.80 | 3.87 % |
| 2010 | 221,519.90 | -1.08 % |
| 2011 | 208,421.70 | -5.91 % |
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