|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 7.95 | NA |
| 1993 | 5.66 | -28.78 % |
| 1994 | 1.78 | -68.59 % |
| 1995 | 2.72 | 52.87 % |
| 1996 | 2.71 | -0.27 % |
| 1997 | 2.04 | -24.59 % |
| 1998 | 1.66 | -18.99 % |
| 1999 | 2.80 | 69.12 % |
| 2000 | 7.29 | 160.19 % |
| 2001 | 7.84 | 7.57 % |
| 2002 | 1.74 | -77.83 % |
| 2003 | 1.98 | 14.11 % |
| 2004 | 2.79 | 40.84 % |
| 2005 | 2.51 | -9.97 % |
| 2006 | 2.64 | 4.88 % |
| 2007 | 3.27 | 24.01 % |
| 2008 | 3.64 | 11.25 % |
| 2009 | 11.24 | 208.99 % |
| 2010 | 11.45 | 1.82 % |
|
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