|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 38.88 | NA |
| 1987 | 44.75 | 15.11 % |
| 1988 | 50.00 | 11.73 % |
| 1989 | 57.34 | 14.68 % |
| 1990 | 63.51 | 10.76 % |
| 1991 | 67.16 | 5.74 % |
| 1992 | 74.42 | 10.81 % |
| 1993 | 84.79 | 13.92 % |
| 1994 | 96.35 | 13.63 % |
| 1995 | 108.44 | 12.55 % |
| 1996 | 118.88 | 9.63 % |
| 1997 | 126.74 | 6.61 % |
| 1998 | 123.52 | -2.54 % |
| 1999 | 121.02 | -2.02 % |
| 2000 | 116.60 | -3.65 % |
| 2001 | 118.60 | 1.72 % |
| 2002 | 126.23 | 6.43 % |
| 2003 | 131.52 | 4.19 % |
| 2004 | 131.64 | 0.09 % |
| 2005 | 124.00 | -5.80 % |
| 2006 | 124.77 | 0.62 % |
| 2007 | 123.91 | -0.69 % |
| 2008 | 115.87 | -6.49 % |
| 2009 | 129.83 | 12.05 % |
| 2010 | 118.60 | -8.65 % |
|
|