|
| year | consumption | change |
| 1984 | 135.48 | NA |
| 1985 | 140.09 | 3.40 % |
| 1986 | 148.76 | 6.19 % |
| 1987 | 143.92 | -3.25 % |
| 1988 | 150.26 | 4.40 % |
| 1989 | 157.79 | 5.01 % |
| 1990 | 150.51 | -4.61 % |
| 1991 | 165.04 | 9.65 % |
| 1992 | 166.78 | 1.05 % |
| 1993 | 160.29 | -3.89 % |
| 1994 | 161.64 | 0.84 % |
| 1995 | 158.18 | -2.14 % |
| 1996 | 158.82 | 0.41 % |
| 1997 | 155.97 | -1.80 % |
| 1998 | 164.04 | 5.17 % |
| 1999 | 171.13 | 4.33 % |
| 2000 | 177.76 | 3.87 % |
| 2001 | 181.08 | 1.87 % |
| 2002 | 183.15 | 1.15 % |
| 2003 | 184.67 | 0.83 % |
| 2004 | 186.93 | 1.23 % |
| 2005 | 192.06 | 2.75 % |
| 2006 | 199.03 | 3.63 % |
| 2007 | 192.98 | -3.04 % |
| 2008 | 194.53 | 0.80 % |
| 2009 | 179.15 | -7.91 % |
| 2010 | 188.98 | 5.49 % |
|
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