|
| year | consumption | change |
| 1984 | 1,277.63 | NA |
| 1985 | 1,324.73 | 3.69 % |
| 1986 | 1,414.11 | 6.75 % |
| 1987 | 1,497.99 | 5.93 % |
| 1988 | 1,565.43 | 4.50 % |
| 1989 | 1,613.83 | 3.09 % |
| 1990 | 1,645.07 | 1.94 % |
| 1991 | 1,586.80 | -3.54 % |
| 1992 | 1,576.15 | -0.67 % |
| 1993 | 1,590.57 | 0.91 % |
| 1994 | 1,656.20 | 4.13 % |
| 1995 | 1,647.14 | -0.55 % |
| 1996 | 1,720.93 | 4.48 % |
| 1997 | 1,746.67 | 1.50 % |
| 1998 | 1,778.02 | 1.79 % |
| 1999 | 1,836.68 | 3.30 % |
| 2000 | 1,889.99 | 2.90 % |
| 2001 | 1,811.00 | -4.18 % |
| 2002 | 1,778.19 | -1.81 % |
| 2003 | 1,735.41 | -2.41 % |
| 2004 | 1,801.57 | 3.81 % |
| 2005 | 1,856.66 | 3.06 % |
| 2006 | 1,811.48 | -2.43 % |
| 2007 | 1,809.59 | -0.10 % |
| 2008 | 1,722.93 | -4.79 % |
| 2009 | 1,551.77 | -9.93 % |
| 2010 | 1,593.55 | 2.69 % |
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