|
| year | consumption | change |
| 1984 | 786.01 | NA |
| 1985 | 787.98 | 0.25 % |
| 1986 | 1,903.13 | 141.52 % |
| 1987 | 1,935.69 | 1.71 % |
| 1988 | 2,087.83 | 7.86 % |
| 1989 | 2,104.43 | 0.79 % |
| 1990 | 2,163.73 | 2.82 % |
| 1991 | 2,338.78 | 8.09 % |
| 1992 | 2,748.76 | 17.53 % |
| 1993 | 2,798.18 | 1.80 % |
| 1994 | 3,135.54 | 12.06 % |
| 1995 | 3,256.02 | 3.84 % |
| 1996 | 3,843.20 | 18.03 % |
| 1997 | 3,669.52 | -4.52 % |
| 1998 | 4,079.68 | 11.18 % |
| 1999 | 4,355.45 | 6.76 % |
| 2000 | 4,636.13 | 6.44 % |
| 2001 | 4,660.55 | 0.53 % |
| 2002 | 4,924.06 | 5.65 % |
| 2003 | 5,271.95 | 7.07 % |
| 2004 | 5,707.71 | 8.27 % |
| 2005 | 5,943.74 | 4.14 % |
| 2006 | 6,254.44 | 5.23 % |
| 2007 | 6,201.53 | -0.85 % |
| 2008 | 5,919.53 | -4.55 % |
| 2009 | 7,298.53 | 23.30 % |
| 2010 | 7,826.45 | 7.23 % |
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