|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 44.47 | NA |
| 1987 | 48.99 | 10.16 % |
| 1988 | 51.87 | 5.88 % |
| 1989 | 60.92 | 17.44 % |
| 1990 | 69.29 | 13.74 % |
| 1991 | 72.73 | 4.97 % |
| 1992 | 80.41 | 10.55 % |
| 1993 | 103.92 | 29.23 % |
| 1994 | 100.83 | -2.97 % |
| 1995 | 107.35 | 6.47 % |
| 1996 | 104.06 | -3.07 % |
| 1997 | 117.87 | 13.28 % |
| 1998 | 118.30 | 0.36 % |
| 1999 | 112.41 | -4.98 % |
| 2000 | 112.66 | 0.21 % |
| 2001 | 118.16 | 4.88 % |
| 2002 | 118.63 | 0.40 % |
| 2003 | 121.23 | 2.19 % |
| 2004 | 121.64 | 0.34 % |
| 2005 | 103.92 | -14.57 % |
| 2006 | 102.55 | -1.31 % |
| 2007 | 115.39 | 12.53 % |
| 2008 | 120.57 | 4.48 % |
| 2009 | 113.22 | -6.10 % |
| 2010 | 122.87 | 8.53 % |
|
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