|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 255.13 | NA |
| 1987 | 290.35 | 13.81 % |
| 1988 | 300.00 | 3.32 % |
| 1989 | 315.00 | 5.00 % |
| 1990 | 320.00 | 1.59 % |
| 1991 | 353.50 | 10.47 % |
| 1992 | 357.87 | 1.24 % |
| 1993 | 415.93 | 16.22 % |
| 1994 | 364.99 | -12.25 % |
| 1995 | 388.04 | 6.32 % |
| 1996 | 375.41 | -3.26 % |
| 1997 | 410.42 | 9.33 % |
| 1998 | 396.08 | -3.50 % |
| 1999 | 391.05 | -1.27 % |
| 2000 | 425.98 | 8.93 % |
| 2001 | 427.30 | 0.31 % |
| 2002 | 431.81 | 1.06 % |
| 2003 | 443.29 | 2.66 % |
| 2004 | 471.09 | 6.27 % |
| 2005 | 483.19 | 2.57 % |
| 2006 | 510.28 | 5.61 % |
| 2007 | 555.19 | 8.80 % |
| 2008 | 578.75 | 4.24 % |
| 2009 | 551.73 | -4.67 % |
| 2010 | 596.16 | 8.05 % |
|
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