|
| year | consumption | change |
| 1984 | 113.07 | NA |
| 1985 | 116.22 | 2.79 % |
| 1986 | 120.95 | 4.07 % |
| 1987 | 123.39 | 2.01 % |
| 1988 | 127.67 | 3.47 % |
| 1989 | 122.17 | -4.31 % |
| 1990 | 104.32 | -14.61 % |
| 1991 | 95.51 | -8.45 % |
| 1992 | 98.13 | 2.75 % |
| 1993 | 101.15 | 3.08 % |
| 1994 | 100.78 | -0.37 % |
| 1995 | 105.13 | 4.32 % |
| 1996 | 132.69 | 26.21 % |
| 1997 | 144.07 | 8.58 % |
| 1998 | 147.65 | 2.48 % |
| 1999 | 152.52 | 3.30 % |
| 2000 | 149.10 | -2.25 % |
| 2001 | 151.72 | 1.76 % |
| 2002 | 151.45 | -0.18 % |
| 2003 | 165.07 | 8.99 % |
| 2004 | 183.74 | 11.31 % |
| 2005 | 195.16 | 6.21 % |
| 2006 | 204.81 | 4.95 % |
| 2007 | 223.27 | 9.02 % |
| 2008 | 240.99 | 7.94 % |
| 2009 | 244.50 | 1.45 % |
| 2010 | 265.07 | 8.42 % |
|
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