|
| year | consumption | change |
| 1984 | 130.99 | NA |
| 1985 | 152.72 | 16.58 % |
| 1986 | 145.12 | -4.98 % |
| 1987 | 135.95 | -6.32 % |
| 1988 | 132.61 | -2.46 % |
| 1989 | 128.84 | -2.84 % |
| 1990 | 130.79 | 1.51 % |
| 1991 | 138.37 | 5.80 % |
| 1992 | 136.80 | -1.14 % |
| 1993 | 130.81 | -4.37 % |
| 1994 | 124.97 | -4.47 % |
| 1995 | 130.28 | 4.25 % |
| 1996 | 132.31 | 1.56 % |
| 1997 | 125.29 | -5.30 % |
| 1998 | 133.41 | 6.48 % |
| 1999 | 132.14 | -0.95 % |
| 2000 | 125.34 | -5.15 % |
| 2001 | 131.09 | 4.59 % |
| 2002 | 127.44 | -2.79 % |
| 2003 | 134.33 | 5.41 % |
| 2004 | 134.38 | 0.04 % |
| 2005 | 139.30 | 3.66 % |
| 2006 | 137.27 | -1.46 % |
| 2007 | 127.64 | -7.01 % |
| 2008 | 135.59 | 6.23 % |
| 2009 | 133.00 | -1.91 % |
| 2010 | 116.38 | -12.50 % |
|
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