|
| year | consumption | change |
| 1980 | 1,765.00 | NA |
| 1981 | 1,705.00 | -3.40 % |
| 1982 | 1,660.00 | -2.64 % |
| 1983 | 1,730.00 | 4.22 % |
| 1984 | 1,740.00 | 0.58 % |
| 1985 | 1,885.00 | 8.33 % |
| 1986 | 2,000.00 | 6.10 % |
| 1987 | 2,120.04 | 6.00 % |
| 1988 | 2,275.00 | 7.31 % |
| 1989 | 2,379.52 | 4.59 % |
| 1990 | 2,296.40 | -3.49 % |
| 1991 | 2,498.80 | 8.81 % |
| 1992 | 2,661.60 | 6.52 % |
| 1993 | 2,959.49 | 11.19 % |
| 1994 | 3,160.61 | 6.80 % |
| 1995 | 3,363.16 | 6.41 % |
| 1996 | 3,610.09 | 7.34 % |
| 1997 | 3,916.27 | 8.48 % |
| 1998 | 4,105.83 | 4.84 % |
| 1999 | 4,363.60 | 6.28 % |
| 2000 | 4,795.72 | 9.90 % |
| 2001 | 4,917.88 | 2.55 % |
| 2002 | 5,160.71 | 4.94 % |
| 2003 | 5,578.11 | 8.09 % |
| 2004 | 6,437.48 | 15.41 % |
| 2005 | 6,695.44 | 4.01 % |
| 2006 | 7,263.33 | 8.48 % |
| 2007 | 7,534.08 | 3.73 % |
| 2008 | 7,467.52 | -0.88 % |
| 2009 | 8,539.73 | 14.36 % |
| 2010 | 9,330.18 | 9.26 % |
| 2011 | 8,924.00 | -4.35 % |
|
|