|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 325,763.90 | NA |
| 1993 | 312,686.10 | -4.01 % |
| 1994 | 284,421.70 | -9.04 % |
| 1995 | 270,035.40 | -5.06 % |
| 1996 | 278,241.00 | 3.04 % |
| 1997 | 253,145.80 | -9.02 % |
| 1998 | 238,254.70 | -5.88 % |
| 1999 | 247,123.90 | 3.72 % |
| 2000 | 252,512.00 | 2.18 % |
| 2001 | 230,630.00 | -8.67 % |
| 2002 | 240,234.40 | 4.16 % |
| 2003 | 243,426.70 | 1.33 % |
| 2004 | 235,114.20 | -3.41 % |
| 2005 | 233,491.60 | -0.69 % |
| 2006 | 240,254.30 | 2.90 % |
| 2007 | 230,401.80 | -4.10 % |
| 2008 | 249,795.90 | 8.42 % |
| 2009 | 243,602.00 | -2.48 % |
| 2010 | 248,728.80 | 2.10 % |
| 2011 | 256,690.80 | 3.20 % |
|
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