|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 67.20 | NA |
| 1987 | 67.71 | 0.77 % |
| 1988 | 67.29 | -0.63 % |
| 1989 | 65.75 | -2.28 % |
| 1990 | 60.01 | -8.73 % |
| 1991 | 60.00 | -0.01 % |
| 1992 | 59.90 | -0.17 % |
| 1993 | 39.84 | -33.49 % |
| 1994 | 51.40 | 29.01 % |
| 1995 | 59.32 | 15.42 % |
| 1996 | 59.39 | 0.12 % |
| 1997 | 35.63 | -40.01 % |
| 1998 | 44.57 | 25.10 % |
| 1999 | 38.63 | -13.33 % |
| 2000 | 40.84 | 5.72 % |
| 2001 | 55.43 | 35.74 % |
| 2002 | 64.74 | 16.78 % |
| 2003 | 59.50 | -8.09 % |
| 2004 | 55.00 | -7.57 % |
| 2005 | 56.53 | 2.78 % |
| 2006 | 63.52 | 12.37 % |
| 2007 | 67.02 | 5.52 % |
| 2008 | 62.46 | -6.81 % |
| 2009 | 105.97 | 69.67 % |
| 2010 | 113.95 | 7.53 % |
|
|
