|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 739.45 | NA |
| 1987 | 751.64 | 1.65 % |
| 1988 | 757.69 | 0.81 % |
| 1989 | 785.60 | 3.68 % |
| 1990 | 635.99 | -19.04 % |
| 1991 | 675.52 | 6.22 % |
| 1992 | 704.47 | 4.29 % |
| 1993 | 735.90 | 4.46 % |
| 1994 | 757.34 | 2.91 % |
| 1995 | 791.37 | 4.49 % |
| 1996 | 865.20 | 9.33 % |
| 1997 | 870.07 | 0.56 % |
| 1998 | 854.44 | -1.80 % |
| 1999 | 833.66 | -2.43 % |
| 2000 | 1,133.14 | 35.92 % |
| 2001 | 1,030.34 | -9.07 % |
| 2002 | 774.58 | -24.82 % |
| 2003 | 799.44 | 3.21 % |
| 2004 | 765.51 | -4.24 % |
| 2005 | 829.41 | 8.35 % |
| 2006 | 865.91 | 4.40 % |
| 2007 | 923.44 | 6.64 % |
| 2008 | 933.60 | 1.10 % |
| 2009 | 903.56 | -3.22 % |
| 2010 | 1,013.32 | 12.15 % |
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