|
| year | consumption | change |
| 1984 | 10,586.28 | NA |
| 1985 | 10,755.57 | 1.60 % |
| 1986 | 15,385.35 | 43.05 % |
| 1987 | 15,766.43 | 2.48 % |
| 1988 | 16,355.12 | 3.73 % |
| 1989 | 16,349.00 | -0.04 % |
| 1990 | 16,537.81 | 1.15 % |
| 1991 | 17,293.66 | 4.57 % |
| 1992 | 17,227.92 | -0.38 % |
| 1993 | 17,532.28 | 1.77 % |
| 1994 | 17,751.23 | 1.25 % |
| 1995 | 18,071.52 | 1.80 % |
| 1996 | 18,335.70 | 1.46 % |
| 1997 | 18,667.97 | 1.81 % |
| 1998 | 19,099.47 | 2.31 % |
| 1999 | 19,404.92 | 1.60 % |
| 2000 | 19,882.33 | 2.46 % |
| 2001 | 20,077.72 | 0.98 % |
| 2002 | 20,188.50 | 0.55 % |
| 2003 | 20,407.94 | 1.09 % |
| 2004 | 20,869.19 | 2.26 % |
| 2005 | 21,169.24 | 1.44 % |
| 2006 | 21,471.27 | 1.43 % |
| 2007 | 21,642.86 | 0.80 % |
| 2008 | 21,325.92 | -1.46 % |
| 2009 | 21,755.21 | 2.01 % |
| 2010 | 22,065.60 | 1.43 % |
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