|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 327.02 | NA |
| 1987 | 344.46 | 5.33 % |
| 1988 | 325.37 | -5.54 % |
| 1989 | 334.92 | 2.93 % |
| 1990 | 340.56 | 1.68 % |
| 1991 | 337.54 | -0.89 % |
| 1992 | 340.78 | 0.96 % |
| 1993 | 335.89 | -1.44 % |
| 1994 | 345.36 | 2.82 % |
| 1995 | 356.75 | 3.30 % |
| 1996 | 332.48 | -6.80 % |
| 1997 | 340.91 | 2.53 % |
| 1998 | 378.95 | 11.16 % |
| 1999 | 339.38 | -10.44 % |
| 2000 | 339.99 | 0.18 % |
| 2001 | 418.45 | 23.08 % |
| 2002 | 418.92 | 0.11 % |
| 2003 | 423.90 | 1.19 % |
| 2004 | 436.50 | 2.97 % |
| 2005 | 432.93 | -0.82 % |
| 2006 | 399.94 | -7.62 % |
| 2007 | 372.23 | -6.93 % |
| 2008 | 386.94 | 3.95 % |
| 2009 | 359.63 | -7.06 % |
| 2010 | 355.50 | -1.15 % |
|
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