|
| year | consumption | change |
| 1980 | 50,480.27 | NA |
| 1981 | 51,178.90 | 1.38 % |
| 1982 | 51,435.78 | 0.50 % |
| 1983 | 52,383.36 | 1.84 % |
| 1984 | 57,313.82 | 9.41 % |
| 1985 | 59,769.56 | 4.28 % |
| 1986 | 60,700.69 | 1.56 % |
| 1987 | 63,629.57 | 4.83 % |
| 1988 | 67,039.37 | 5.36 % |
| 1989 | 69,968.14 | 4.37 % |
| 1990 | 70,762.52 | 1.14 % |
| 1991 | 74,801.13 | 5.71 % |
| 1992 | 74,898.79 | 0.13 % |
| 1993 | 77,269.39 | 3.17 % |
| 1994 | 76,974.05 | -0.38 % |
| 1995 | 78,925.45 | 2.54 % |
| 1996 | 80,974.23 | 2.60 % |
| 1997 | 81,150.91 | 0.22 % |
| 1998 | 81,629.52 | 0.59 % |
| 1999 | 83,777.09 | 2.63 % |
| 2000 | 87,259.27 | 4.16 % |
| 2001 | 87,593.09 | 0.38 % |
| 2002 | 91,342.30 | 4.28 % |
| 2003 | 94,123.04 | 3.04 % |
| 2004 | 97,252.09 | 3.32 % |
| 2005 | 100,012.20 | 2.84 % |
| 2006 | 102,703.00 | 2.69 % |
| 2007 | 105,862.80 | 3.08 % |
| 2008 | 109,231.60 | 3.18 % |
| 2009 | 105,262.80 | -3.63 % |
| 2010 | 113,321.10 | 7.66 % |
| 2011 | 118,955.90 | 4.97 % |
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