|
| 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 | 2,776.00 | NA |
| 1992 | 2,739.45 | -1.32 % |
| 1993 | 2,829.83 | 3.30 % |
| 1994 | 2,965.08 | 4.78 % |
| 1995 | 3,171.57 | 6.96 % |
| 1996 | 3,162.74 | -0.28 % |
| 1997 | 3,011.88 | -4.77 % |
| 1998 | 3,129.90 | 3.92 % |
| 1999 | 3,150.98 | 0.67 % |
| 2000 | 3,098.11 | -1.68 % |
| 2001 | 3,239.41 | 4.56 % |
| 2002 | 3,204.45 | -1.08 % |
| 2003 | 3,565.83 | 11.28 % |
| 2004 | 3,532.56 | -0.93 % |
| 2005 | 3,464.37 | -1.93 % |
| 2006 | 3,523.55 | 1.71 % |
| 2007 | 3,417.86 | -3.00 % |
| 2008 | 3,465.25 | 1.39 % |
| 2009 | 3,302.24 | -4.70 % |
| 2010 | 3,180.79 | -3.68 % |
| 2011 | 2,740.34 | -13.85 % |
|
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