|
| year | consumption | change |
| 1984 | 294.11 | NA |
| 1985 | 328.72 | 11.77 % |
| 1986 | 360.86 | 9.78 % |
| 1987 | 355.97 | -1.36 % |
| 1988 | 381.12 | 7.07 % |
| 1989 | 402.68 | 5.66 % |
| 1990 | 349.67 | -13.16 % |
| 1991 | 375.12 | 7.28 % |
| 1992 | 407.25 | 8.57 % |
| 1993 | 410.26 | 0.74 % |
| 1994 | 402.70 | -1.84 % |
| 1995 | 401.81 | -0.22 % |
| 1996 | 393.74 | -2.01 % |
| 1997 | 397.38 | 0.92 % |
| 1998 | 400.33 | 0.74 % |
| 1999 | 445.82 | 11.36 % |
| 2000 | 485.31 | 8.86 % |
| 2001 | 472.93 | -2.55 % |
| 2002 | 457.30 | -3.30 % |
| 2003 | 442.31 | -3.28 % |
| 2004 | 450.99 | 1.96 % |
| 2005 | 432.36 | -4.13 % |
| 2006 | 425.87 | -1.50 % |
| 2007 | 412.12 | -3.23 % |
| 2008 | 424.89 | 3.10 % |
| 2009 | 417.82 | -1.66 % |
| 2010 | 424.24 | 1.54 % |
|
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