|
| 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 | 2,958.60 | NA |
| 1993 | 2,575.00 | -12.97 % |
| 1994 | 2,534.21 | -1.58 % |
| 1995 | 1,500.25 | -40.80 % |
| 1996 | 1,300.73 | -13.30 % |
| 1997 | 731.93 | -43.73 % |
| 1998 | 621.70 | -15.06 % |
| 1999 | 263.45 | -57.62 % |
| 2000 | 210.54 | -20.08 % |
| 2001 | 165.35 | -21.47 % |
| 2002 | 176.37 | 6.67 % |
| 2003 | 249.12 | 41.25 % |
| 2004 | 207.23 | -16.81 % |
| 2005 | 186.29 | -10.11 % |
| 2006 | 213.85 | 14.79 % |
| 2007 | 144.40 | -32.47 % |
| 2008 | 218.26 | 51.15 % |
| 2009 | 199.52 | -8.59 % |
| 2010 | 205.03 | 2.76 % |
| 2011 | 169.76 | -17.20 % |
|
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