|
| year | consumption | change |
| 1980 | 51.00 | NA |
| 1981 | 64.00 | 25.49 % |
| 1982 | 89.00 | 39.06 % |
| 1983 | 105.60 | 18.65 % |
| 1984 | 113.00 | 7.01 % |
| 1985 | 135.00 | 19.47 % |
| 1986 | 180.00 | 33.33 % |
| 1987 | 226.70 | 25.94 % |
| 1988 | 310.00 | 36.74 % |
| 1989 | 315.19 | 1.67 % |
| 1990 | 399.00 | 26.59 % |
| 1991 | 449.00 | 12.53 % |
| 1992 | 476.75 | 6.18 % |
| 1993 | 531.84 | 11.56 % |
| 1994 | 593.64 | 11.62 % |
| 1995 | 627.55 | 5.71 % |
| 1996 | 696.41 | 10.97 % |
| 1997 | 716.89 | 2.94 % |
| 1998 | 760.69 | 6.11 % |
| 1999 | 752.21 | -1.11 % |
| 2000 | 794.59 | 5.63 % |
| 2001 | 851.09 | 7.11 % |
| 2002 | 925.25 | 8.71 % |
| 2003 | 964.10 | 4.20 % |
| 2004 | 1,087.70 | 12.82 % |
| 2005 | 1,269.22 | 16.69 % |
| 2006 | 1,369.87 | 7.93 % |
| 2007 | 1,460.63 | 6.63 % |
| 2008 | 1,515.01 | 3.72 % |
| 2009 | 1,882.64 | 24.27 % |
| 2010 | 2,277.46 | 20.97 % |
| 2011 | 2,260.51 | -0.74 % |
|
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