|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 16,481.51 | NA |
| 1993 | 16,184.86 | -1.80 % |
| 1994 | 15,213.70 | -6.00 % |
| 1995 | 14,507.40 | -4.64 % |
| 1996 | 13,085.62 | -9.80 % |
| 1997 | 12,298.45 | -6.02 % |
| 1998 | 12,603.57 | 2.48 % |
| 1999 | 12,582.38 | -0.17 % |
| 2000 | 13,058.78 | 3.79 % |
| 2001 | 12,905.51 | -1.17 % |
| 2002 | 13,564.14 | 5.10 % |
| 2003 | 14,204.40 | 4.72 % |
| 2004 | 14,567.08 | 2.55 % |
| 2005 | 14,330.47 | -1.62 % |
| 2006 | 15,223.94 | 6.23 % |
| 2007 | 15,226.77 | 0.02 % |
| 2008 | 15,545.66 | 2.09 % |
| 2009 | 13,504.81 | -13.13 % |
| 2010 | 14,960.85 | 10.78 % |
| 2011 | 17,975.34 | 20.15 % |
|
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