|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 22.20 | NA |
| 1993 | 23.09 | 3.99 % |
| 1994 | 25.41 | 10.05 % |
| 1995 | 28.01 | 10.24 % |
| 1996 | 25.22 | -9.95 % |
| 1997 | 27.12 | 7.52 % |
| 1998 | 28.88 | 6.50 % |
| 1999 | 30.15 | 4.39 % |
| 2000 | 19.87 | -34.09 % |
| 2001 | 22.13 | 11.39 % |
| 2002 | 25.26 | 14.14 % |
| 2003 | 26.21 | 3.76 % |
| 2004 | 18.49 | -29.47 % |
| 2005 | 18.54 | 0.27 % |
| 2006 | 19.53 | 5.32 % |
| 2007 | 18.52 | -5.15 % |
| 2008 | 15.18 | -18.03 % |
| 2009 | 17.28 | 13.84 % |
| 2010 | 9.96 | -42.36 % |
|
|
