|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 3.40 | NA |
| 1993 | 2.47 | -27.22 % |
| 1994 | 1.69 | -31.70 % |
| 1995 | 1.66 | -1.78 % |
| 1996 | 2.80 | 68.67 % |
| 1997 | 2.97 | 5.95 % |
| 1998 | 2.93 | -1.38 % |
| 1999 | 4.82 | 64.87 % |
| 2000 | 6.20 | 28.47 % |
| 2001 | 14.31 | 130.94 % |
| 2002 | 2.06 | -85.57 % |
| 2003 | 2.62 | 26.73 % |
| 2004 | 3.28 | 25.44 % |
| 2005 | 3.92 | 19.58 % |
| 2006 | 5.03 | 28.12 % |
| 2007 | 5.42 | 7.72 % |
| 2008 | 5.38 | -0.75 % |
| 2009 | 7.77 | 44.49 % |
| 2010 | 7.77 | 0.00 % |
|
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