|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 77.42 | NA |
| 1987 | 83.79 | 8.23 % |
| 1988 | 89.58 | 6.91 % |
| 1989 | 97.77 | 9.15 % |
| 1990 | 109.69 | 12.19 % |
| 1991 | 117.90 | 7.49 % |
| 1992 | 123.58 | 4.82 % |
| 1993 | 128.03 | 3.60 % |
| 1994 | 143.74 | 12.27 % |
| 1995 | 125.49 | -12.69 % |
| 1996 | 163.24 | 30.08 % |
| 1997 | 173.75 | 6.44 % |
| 1998 | 174.39 | 0.36 % |
| 1999 | 208.02 | 19.28 % |
| 2000 | 213.81 | 2.79 % |
| 2001 | 234.82 | 9.83 % |
| 2002 | 255.15 | 8.66 % |
| 2003 | 270.01 | 5.82 % |
| 2004 | 292.60 | 8.36 % |
| 2005 | 319.77 | 9.29 % |
| 2006 | 325.47 | 1.78 % |
| 2007 | 321.52 | -1.21 % |
| 2008 | 285.28 | -11.27 % |
| 2009 | 422.55 | 48.12 % |
| 2010 | 442.44 | 4.71 % |
|
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