|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 2.81 | NA |
| 1987 | 5.61 | 100.17 % |
| 1988 | 5.22 | -7.10 % |
| 1989 | 5.23 | 0.27 % |
| 1990 | 3.50 | -33.08 % |
| 1991 | 6.20 | 77.14 % |
| 1992 | 6.55 | 5.61 % |
| 1993 | 6.91 | 5.50 % |
| 1994 | 9.03 | 30.64 % |
| 1995 | 4.16 | -53.91 % |
| 1996 | 3.91 | -5.91 % |
| 1997 | 4.31 | 10.14 % |
| 1998 | 4.83 | 12.01 % |
| 1999 | 33.06 | 584.78 % |
| 2000 | 32.24 | -2.51 % |
| 2001 | 36.14 | 12.10 % |
| 2002 | 35.87 | -0.73 % |
| 2003 | 37.52 | 4.58 % |
| 2004 | 39.30 | 4.76 % |
| 2005 | 23.17 | -41.04 % |
| 2006 | 4.81 | -79.22 % |
| 2007 | 7.85 | 63.03 % |
| 2008 | 8.49 | 8.10 % |
| 2009 | 5.36 | -36.88 % |
| 2010 | 5.56 | 3.71 % |
|
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