|
| year | consumption | change |
| 1984 | 402.37 | NA |
| 1985 | 399.92 | -0.61 % |
| 1986 | 391.16 | -2.19 % |
| 1987 | 392.76 | 0.41 % |
| 1988 | 412.31 | 4.98 % |
| 1989 | 426.48 | 3.44 % |
| 1990 | 409.06 | -4.08 % |
| 1991 | 380.21 | -7.05 % |
| 1992 | 379.76 | -0.12 % |
| 1993 | 397.86 | 4.77 % |
| 1994 | 422.85 | 6.28 % |
| 1995 | 432.69 | 2.33 % |
| 1996 | 455.10 | 5.18 % |
| 1997 | 472.96 | 3.92 % |
| 1998 | 460.68 | -2.60 % |
| 1999 | 477.72 | 3.70 % |
| 2000 | 499.94 | 4.65 % |
| 2001 | 485.08 | -2.97 % |
| 2002 | 484.31 | -0.16 % |
| 2003 | 508.20 | 4.93 % |
| 2004 | 531.36 | 4.56 % |
| 2005 | 542.77 | 2.15 % |
| 2006 | 536.21 | -1.21 % |
| 2007 | 565.75 | 5.51 % |
| 2008 | 550.78 | -2.65 % |
| 2009 | 506.79 | -7.99 % |
| 2010 | 543.34 | 7.21 % |
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