|
| 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 | 709.83 | NA |
| 1993 | 522.66 | -26.37 % |
| 1994 | 529.72 | 1.35 % |
| 1995 | 383.43 | -27.62 % |
| 1996 | 509.95 | 33.00 % |
| 1997 | 494.41 | -3.05 % |
| 1998 | 473.22 | -4.29 % |
| 1999 | 480.28 | 1.49 % |
| 2000 | 490.88 | 2.21 % |
| 2001 | 505.00 | 2.88 % |
| 2002 | 526.19 | 4.20 % |
| 2003 | 321.23 | -38.95 % |
| 2004 | 482.72 | 50.27 % |
| 2005 | 476.68 | -1.25 % |
| 2006 | 521.43 | 9.39 % |
| 2007 | 441.12 | -15.40 % |
| 2008 | 313.21 | -29.00 % |
| 2009 | 304.42 | -2.81 % |
| 2010 | 303.25 | -0.38 % |
| 2011 | 436.14 | 43.82 % |
|
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