|
| 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 | | NA |
| 1993 | 220.37 | NA |
| 1994 | 208.36 | -5.45 % |
| 1995 | 272.99 | 31.02 % |
| 1996 | 240.78 | -11.80 % |
| 1997 | 244.63 | 1.60 % |
| 1998 | 248.72 | 1.67 % |
| 1999 | 250.95 | 0.89 % |
| 2000 | 252.01 | 0.42 % |
| 2001 | 269.56 | 6.96 % |
| 2002 | 256.03 | -5.02 % |
| 2003 | 246.82 | -3.60 % |
| 2004 | 237.32 | -3.85 % |
| 2005 | 255.22 | 7.54 % |
| 2006 | 232.20 | -9.02 % |
| 2007 | 219.52 | -5.46 % |
| 2008 | 222.77 | 1.48 % |
| 2009 | 190.60 | -14.44 % |
| 2010 | 215.39 | 13.01 % |
| 2011 | 198.58 | -7.80 % |
|
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