|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 404.32 | NA |
| 1987 | 396.85 | -1.85 % |
| 1988 | 406.73 | 2.49 % |
| 1989 | 431.25 | 6.03 % |
| 1990 | 432.07 | 0.19 % |
| 1991 | 492.33 | 13.95 % |
| 1992 | 508.28 | 3.24 % |
| 1993 | 501.21 | -1.39 % |
| 1994 | 500.84 | -0.07 % |
| 1995 | 518.89 | 3.60 % |
| 1996 | 510.82 | -1.55 % |
| 1997 | 511.66 | 0.16 % |
| 1998 | 525.35 | 2.68 % |
| 1999 | 521.09 | -0.81 % |
| 2000 | 579.14 | 11.14 % |
| 2001 | 610.63 | 5.44 % |
| 2002 | 611.56 | 0.15 % |
| 2003 | 618.00 | 1.05 % |
| 2004 | 647.24 | 4.73 % |
| 2005 | 666.53 | 2.98 % |
| 2006 | 652.97 | -2.03 % |
| 2007 | 668.92 | 2.44 % |
| 2008 | 710.19 | 6.17 % |
| 2009 | 759.44 | 6.93 % |
| 2010 | 763.46 | 0.53 % |
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