|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 10.12 | NA |
| 1987 | 15.21 | 50.42 % |
| 1988 | 20.13 | 32.31 % |
| 1989 | 20.85 | 3.56 % |
| 1990 | 14.00 | -32.84 % |
| 1991 | 15.00 | 7.13 % |
| 1992 | 15.58 | 3.91 % |
| 1993 | 14.65 | -6.00 % |
| 1994 | 14.83 | 1.21 % |
| 1995 | 14.23 | -4.00 % |
| 1996 | 13.54 | -4.91 % |
| 1997 | 13.09 | -3.26 % |
| 1998 | 13.70 | 4.62 % |
| 1999 | 12.51 | -8.72 % |
| 2000 | 11.96 | -4.33 % |
| 2001 | 16.15 | 34.96 % |
| 2002 | 14.48 | -10.33 % |
| 2003 | 19.24 | 32.87 % |
| 2004 | 20.25 | 5.25 % |
| 2005 | 24.58 | 21.42 % |
| 2006 | 34.15 | 38.91 % |
| 2007 | 33.29 | -2.50 % |
| 2008 | 51.91 | 55.92 % |
| 2009 | 64.78 | 24.79 % |
| 2010 | 63.98 | -1.23 % |
|
|
