|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 196.87 | NA |
| 1987 | 244.82 | 24.35 % |
| 1988 | 282.37 | 15.34 % |
| 1989 | 283.48 | 0.39 % |
| 1990 | 300.73 | 6.09 % |
| 1991 | 316.32 | 5.18 % |
| 1992 | 331.94 | 4.94 % |
| 1993 | 317.23 | -4.43 % |
| 1994 | 368.84 | 16.27 % |
| 1995 | 380.83 | 3.25 % |
| 1996 | 395.04 | 3.73 % |
| 1997 | 390.24 | -1.21 % |
| 1998 | 374.13 | -4.13 % |
| 1999 | 438.21 | 17.13 % |
| 2000 | 458.24 | 4.57 % |
| 2001 | 452.31 | -1.29 % |
| 2002 | 448.01 | -0.95 % |
| 2003 | 399.61 | -10.80 % |
| 2004 | 462.07 | 15.63 % |
| 2005 | 416.24 | -9.92 % |
| 2006 | 486.82 | 16.96 % |
| 2007 | 499.87 | 2.68 % |
| 2008 | 465.46 | -6.88 % |
| 2009 | 500.18 | 7.46 % |
| 2010 | 525.29 | 5.02 % |
|
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