|
| year | consumption | change |
| 1984 | 89.46 | NA |
| 1985 | 81.20 | -9.23 % |
| 1986 | 102.87 | 26.69 % |
| 1987 | 102.08 | -0.77 % |
| 1988 | 108.87 | 6.66 % |
| 1989 | 103.58 | -4.86 % |
| 1990 | 102.54 | -1.00 % |
| 1991 | 115.54 | 12.68 % |
| 1992 | 115.30 | -0.21 % |
| 1993 | 113.90 | -1.22 % |
| 1994 | 112.24 | -1.45 % |
| 1995 | 102.48 | -8.70 % |
| 1996 | 115.07 | 12.28 % |
| 1997 | 123.81 | 7.60 % |
| 1998 | 131.66 | 6.35 % |
| 1999 | 111.22 | -15.53 % |
| 2000 | 113.61 | 2.14 % |
| 2001 | 117.15 | 3.11 % |
| 2002 | 136.03 | 16.12 % |
| 2003 | 160.60 | 18.06 % |
| 2004 | 163.29 | 1.68 % |
| 2005 | 164.76 | 0.90 % |
| 2006 | 170.23 | 3.32 % |
| 2007 | 187.73 | 10.28 % |
| 2008 | 187.69 | -0.02 % |
| 2009 | 139.41 | -25.72 % |
| 2010 | 125.53 | -9.96 % |
|
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