|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 89.66 | NA |
| 1987 | 66.01 | -26.38 % |
| 1988 | 79.08 | 19.80 % |
| 1989 | 80.97 | 2.38 % |
| 1990 | 90.00 | 11.16 % |
| 1991 | 73.57 | -18.26 % |
| 1992 | 109.91 | 49.39 % |
| 1993 | 127.95 | 16.42 % |
| 1994 | 156.62 | 22.41 % |
| 1995 | 156.25 | -0.24 % |
| 1996 | 155.26 | -0.64 % |
| 1997 | 102.48 | -34.00 % |
| 1998 | 137.30 | 33.98 % |
| 1999 | 134.90 | -1.74 % |
| 2000 | 108.64 | -19.46 % |
| 2001 | 139.89 | 28.76 % |
| 2002 | 152.40 | 8.94 % |
| 2003 | 139.55 | -8.43 % |
| 2004 | 131.15 | -6.02 % |
| 2005 | 138.34 | 5.49 % |
| 2006 | 130.28 | -5.82 % |
| 2007 | 181.90 | 39.62 % |
| 2008 | 191.92 | 5.51 % |
| 2009 | 200.13 | 4.28 % |
| 2010 | 208.77 | 4.32 % |
|
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