|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 6.95 | NA |
| 1987 | 4.60 | -33.80 % |
| 1988 | 4.49 | -2.46 % |
| 1989 | 4.48 | -0.16 % |
| 1990 | 4.79 | 6.77 % |
| 1991 | 3.35 | -29.92 % |
| 1992 | 8.35 | 149.02 % |
| 1993 | 8.57 | 2.58 % |
| 1994 | 5.51 | -35.66 % |
| 1995 | 9.45 | 71.46 % |
| 1996 | 8.55 | -9.52 % |
| 1997 | 9.67 | 13.07 % |
| 1998 | 17.94 | 85.59 % |
| 1999 | 9.96 | -44.51 % |
| 2000 | 10.51 | 5.50 % |
| 2001 | 11.05 | 5.15 % |
| 2002 | 10.87 | -1.61 % |
| 2003 | 10.64 | -2.09 % |
| 2004 | 10.61 | -0.25 % |
| 2005 | 17.54 | 65.20 % |
| 2006 | 11.24 | -35.93 % |
| 2007 | 9.31 | -17.12 % |
| 2008 | 8.99 | -3.41 % |
| 2009 | 10.33 | 14.84 % |
| 2010 | 7.99 | -22.61 % |
|
|
