|
| 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 | 790.36 | NA |
| 1993 | 847.57 | 7.24 % |
| 1994 | 574.08 | -32.27 % |
| 1995 | 295.42 | -48.54 % |
| 1996 | 429.24 | 45.30 % |
| 1997 | 588.01 | 36.99 % |
| 1998 | 467.05 | -20.57 % |
| 1999 | 308.65 | -33.91 % |
| 2000 | 899.78 | 191.52 % |
| 2001 | 877.44 | -2.48 % |
| 2002 | 1,082.47 | 23.37 % |
| 2003 | 1,256.64 | 16.09 % |
| 2004 | 1,332.69 | 6.05 % |
| 2005 | 1,281.99 | -3.80 % |
| 2006 | 1,203.72 | -6.10 % |
| 2007 | 1,294.11 | 7.51 % |
| 2008 | 1,330.49 | 2.81 % |
| 2009 | 963.42 | -27.59 % |
| 2010 | 1,290.81 | 33.98 % |
| 2011 | 1,814.41 | 40.56 % |
|
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