|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 449.13 | NA |
| 1987 | 423.18 | -5.78 % |
| 1988 | 452.07 | 6.83 % |
| 1989 | 459.48 | 1.64 % |
| 1990 | 506.16 | 10.16 % |
| 1991 | 502.92 | -0.64 % |
| 1992 | 492.23 | -2.12 % |
| 1993 | 486.89 | -1.08 % |
| 1994 | 508.66 | 4.47 % |
| 1995 | 478.78 | -5.87 % |
| 1996 | 453.44 | -5.29 % |
| 1997 | 484.68 | 6.89 % |
| 1998 | 497.51 | 2.65 % |
| 1999 | 515.75 | 3.67 % |
| 2000 | 457.76 | -11.25 % |
| 2001 | 450.21 | -1.65 % |
| 2002 | 439.14 | -2.46 % |
| 2003 | 445.66 | 1.49 % |
| 2004 | 449.81 | 0.93 % |
| 2005 | 465.36 | 3.46 % |
| 2006 | 472.33 | 1.50 % |
| 2007 | 441.68 | -6.49 % |
| 2008 | 423.61 | -4.09 % |
| 2009 | 418.26 | -1.26 % |
| 2010 | 453.49 | 8.42 % |
|
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