|
| year | consumption | change |
| 1980 | 104,765.90 | NA |
| 1981 | 116,367.70 | 11.07 % |
| 1982 | 123,517.30 | 6.14 % |
| 1983 | 127,346.70 | 3.10 % |
| 1984 | 137,489.10 | 7.96 % |
| 1985 | 141,768.30 | 3.11 % |
| 1986 | 144,634.30 | 2.02 % |
| 1987 | 148,041.50 | 2.36 % |
| 1988 | 151,315.40 | 2.21 % |
| 1989 | 140,487.40 | -7.16 % |
| 1990 | 139,081.90 | -1.00 % |
| 1991 | 143,638.50 | 3.28 % |
| 1992 | 147,390.00 | 2.61 % |
| 1993 | 146,389.70 | -0.68 % |
| 1994 | 160,745.00 | 9.81 % |
| 1995 | 162,260.60 | 0.94 % |
| 1996 | 163,936.30 | 1.03 % |
| 1997 | 171,665.20 | 4.71 % |
| 1998 | 160,838.80 | -6.31 % |
| 1999 | 169,104.50 | 5.14 % |
| 2000 | 175,009.60 | 3.49 % |
| 2001 | 177,859.00 | 1.63 % |
| 2002 | 170,121.90 | -4.35 % |
| 2003 | 185,925.90 | 9.29 % |
| 2004 | 198,820.00 | 6.94 % |
| 2005 | 193,348.70 | -2.75 % |
| 2006 | 196,079.10 | 1.41 % |
| 2007 | 201,156.40 | 2.59 % |
| 2008 | 216,854.40 | 7.80 % |
| 2009 | 211,824.60 | -2.32 % |
| 2010 | 209,403.90 | -1.14 % |
| 2011 | 201,403.30 | -3.82 % |
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