|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 141.26 | NA |
| 1993 | 84.76 | -40.00 % |
| 1994 | 81.22 | -4.18 % |
| 1995 | 98.88 | 21.74 % |
| 1996 | 91.82 | -7.14 % |
| 1997 | 102.41 | 11.54 % |
| 1998 | 113.01 | 10.34 % |
| 1999 | 75.57 | -33.13 % |
| 2000 | 91.82 | 21.50 % |
| 2001 | 97.47 | 6.15 % |
| 2002 | 102.06 | 4.71 % |
| 2003 | 107.00 | 4.84 % |
| 2004 | 103.12 | -3.63 % |
| 2005 | 107.36 | 4.11 % |
| 2006 | 102.77 | -4.28 % |
| 2007 | 121.48 | 18.21 % |
| 2008 | 124.66 | 2.62 % |
| 2009 | 96.41 | -22.66 % |
| 2010 | 109.83 | 13.92 % |
| 2011 | 120.07 | 9.32 % |
|
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