|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 394.67 | NA |
| 1987 | 394.47 | -0.05 % |
| 1988 | 447.59 | 13.47 % |
| 1989 | 454.77 | 1.60 % |
| 1990 | 436.51 | -4.02 % |
| 1991 | 462.10 | 5.86 % |
| 1992 | 560.86 | 21.37 % |
| 1993 | 571.51 | 1.90 % |
| 1994 | 719.08 | 25.82 % |
| 1995 | 770.46 | 7.14 % |
| 1996 | 1,141.56 | 48.17 % |
| 1997 | 690.39 | -39.52 % |
| 1998 | 1,035.21 | 49.94 % |
| 1999 | 1,069.65 | 3.33 % |
| 2000 | 1,030.01 | -3.71 % |
| 2001 | 980.31 | -4.82 % |
| 2002 | 1,231.94 | 25.67 % |
| 2003 | 1,289.56 | 4.68 % |
| 2004 | 1,665.40 | 29.14 % |
| 2005 | 1,673.53 | 0.49 % |
| 2006 | 1,789.38 | 6.92 % |
| 2007 | 1,957.52 | 9.40 % |
| 2008 | 1,724.16 | -11.92 % |
| 2009 | 2,475.10 | 43.55 % |
| 2010 | 2,947.68 | 19.09 % |
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