|
| year | consumption | change |
| 1980 | 30,765.51 | NA |
| 1981 | 34,183.78 | 11.11 % |
| 1982 | 34,665.49 | 1.41 % |
| 1983 | 37,759.68 | 8.93 % |
| 1984 | 44,235.75 | 17.15 % |
| 1985 | 49,522.44 | 11.95 % |
| 1986 | 53,850.11 | 8.74 % |
| 1987 | 52,386.25 | -2.72 % |
| 1988 | 53,593.28 | 2.30 % |
| 1989 | 50,623.65 | -5.54 % |
| 1990 | 49,773.77 | -1.68 % |
| 1991 | 48,240.18 | -3.08 % |
| 1992 | 43,086.04 | -10.68 % |
| 1993 | 45,609.23 | 5.86 % |
| 1994 | 46,850.44 | 2.72 % |
| 1995 | 49,246.86 | 5.12 % |
| 1996 | 53,866.65 | 9.38 % |
| 1997 | 57,054.54 | 5.92 % |
| 1998 | 66,021.84 | 15.72 % |
| 1999 | 61,885.96 | -6.26 % |
| 2000 | 70,980.03 | 14.69 % |
| 2001 | 80,024.50 | 12.74 % |
| 2002 | 80,566.84 | 0.68 % |
| 2003 | 82,267.70 | 2.11 % |
| 2004 | 86,017.77 | 4.56 % |
| 2005 | 87,911.54 | 2.20 % |
| 2006 | 89,636.66 | 1.96 % |
| 2007 | 98,225.86 | 9.58 % |
| 2008 | 110,522.10 | 12.52 % |
| 2009 | 114,149.90 | 3.28 % |
| 2010 | 127,414.00 | 11.62 % |
| 2011 | 139,481.00 | 9.47 % |
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