|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 11.42 | NA |
| 1993 | 6.18 | -45.91 % |
| 1994 | 4.74 | -23.20 % |
| 1995 | 4.56 | -3.85 % |
| 1996 | 1.75 | -61.71 % |
| 1997 | 1.75 | 0.27 % |
| 1998 | 1.97 | 12.50 % |
| 1999 | 2.03 | 2.78 % |
| 2000 | 2.89 | 42.85 % |
| 2001 | 2.90 | 0.27 % |
| 2002 | 3.03 | 4.40 % |
| 2003 | 3.27 | 7.83 % |
| 2004 | 3.38 | 3.63 % |
| 2005 | 3.54 | 4.59 % |
| 2006 | 4.45 | 25.77 % |
| 2007 | 4.51 | 1.23 % |
| 2008 | 4.56 | 1.21 % |
| 2009 | 4.31 | -5.60 % |
| 2010 | 3.76 | -12.71 % |
|
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