|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 59.55 | NA |
| 1987 | 64.06 | 7.57 % |
| 1988 | 63.88 | -0.29 % |
| 1989 | 76.08 | 19.10 % |
| 1990 | 81.45 | 7.06 % |
| 1991 | 74.04 | -9.10 % |
| 1992 | 79.45 | 7.31 % |
| 1993 | 79.14 | -0.39 % |
| 1994 | 86.09 | 8.78 % |
| 1995 | 89.06 | 3.44 % |
| 1996 | 87.57 | -1.67 % |
| 1997 | 90.77 | 3.65 % |
| 1998 | 98.11 | 8.09 % |
| 1999 | 102.49 | 4.46 % |
| 2000 | 105.22 | 2.67 % |
| 2001 | 92.25 | -12.33 % |
| 2002 | 93.11 | 0.93 % |
| 2003 | 89.77 | -3.58 % |
| 2004 | 94.50 | 5.27 % |
| 2005 | 84.23 | -10.87 % |
| 2006 | 90.42 | 7.35 % |
| 2007 | 82.90 | -8.32 % |
| 2008 | 89.74 | 8.26 % |
| 2009 | 127.50 | 42.07 % |
| 2010 | 117.30 | -8.00 % |
|
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