|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 18.83 | NA |
| 1993 | 15.05 | -20.07 % |
| 1994 | 14.40 | -4.36 % |
| 1995 | 18.83 | 30.80 % |
| 1996 | 21.40 | 13.64 % |
| 1997 | 16.02 | -25.14 % |
| 1998 | 14.04 | -12.38 % |
| 1999 | 7.61 | -45.80 % |
| 2000 | 8.09 | 6.30 % |
| 2001 | 8.59 | 6.25 % |
| 2002 | 4.18 | -51.38 % |
| 2003 | 4.03 | -3.49 % |
| 2004 | 1.97 | -51.26 % |
| 2005 | 1.08 | -45.22 % |
| 2006 | 3.43 | 218.64 % |
| 2007 | 2.96 | -13.83 % |
| 2008 | 3.10 | 4.94 % |
| 2009 | 4.56 | 47.06 % |
| 2010 | 3.89 | -14.80 % |
|
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