|
| year | consumption | change |
| 1980 | 22,599.59 | NA |
| 1981 | 23,822.05 | 5.41 % |
| 1982 | 26,490.75 | 11.20 % |
| 1983 | 29,969.64 | 13.13 % |
| 1984 | 35,238.69 | 17.58 % |
| 1985 | 46,190.15 | 31.08 % |
| 1986 | 55,219.18 | 19.55 % |
| 1987 | 53,965.20 | -2.27 % |
| 1988 | 46,012.68 | -14.74 % |
| 1989 | 60,648.07 | 31.81 % |
| 1990 | 59,989.99 | -1.09 % |
| 1991 | 63,546.05 | 5.93 % |
| 1992 | 65,960.11 | 3.80 % |
| 1993 | 60,476.11 | -8.31 % |
| 1994 | 65,569.89 | 8.42 % |
| 1995 | 67,339.10 | 2.70 % |
| 1996 | 73,280.55 | 8.82 % |
| 1997 | 80,095.05 | 9.30 % |
| 1998 | 86,283.42 | 7.73 % |
| 1999 | 83,690.79 | -3.00 % |
| 2000 | 88,845.20 | 6.16 % |
| 2001 | 80,291.26 | -9.63 % |
| 2002 | 73,237.57 | -8.79 % |
| 2003 | 71,061.60 | -2.97 % |
| 2004 | 71,420.96 | 0.51 % |
| 2005 | 85,232.92 | 19.34 % |
| 2006 | 92,449.75 | 8.47 % |
| 2007 | 108,917.20 | 17.81 % |
| 2008 | 108,836.70 | -0.07 % |
| 2009 | 108,913.90 | 0.07 % |
| 2010 | 105,732.60 | -2.92 % |
| 2011 | 112,496.40 | 6.40 % |
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