|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.80 | NA |
| 1987 | 1.38 | -50.83 % |
| 1988 | 1.25 | -9.01 % |
| 1989 | 1.33 | 6.19 % |
| 1990 | 1.80 | 35.49 % |
| 1991 | 1.63 | -9.46 % |
| 1992 | 1.16 | -28.80 % |
| 1993 | 1.74 | 49.53 % |
| 1994 | 1.80 | 3.53 % |
| 1995 | 1.84 | 2.27 % |
| 1996 | 1.83 | -0.27 % |
| 1997 | 1.86 | 1.39 % |
| 1998 | 1.86 | 0.00 % |
| 1999 | 1.86 | 0.00 % |
| 2000 | 1.94 | 4.11 % |
| 2001 | 1.98 | 2.38 % |
| 2002 | 2.00 | 1.03 % |
| 2003 | 2.04 | 2.04 % |
| 2004 | 2.14 | 4.71 % |
| 2005 | 2.35 | 9.82 % |
| 2006 | 2.45 | 4.35 % |
| 2007 | 2.49 | 1.67 % |
| 2008 | 2.55 | 2.46 % |
| 2009 | 5.50 | 115.20 % |
| 2010 | 5.50 | 0.00 % |
|
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