|
| year | consumption | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | 1.94 | NA |
| 1988 | 2.83 | 45.63 % |
| 1989 | 2.82 | -0.18 % |
| 1990 | | NA |
| 1991 | 3.23 | NA |
| 1992 | 3.53 | 9.46 % |
| 1993 | 3.53 | -0.04 % |
| 1994 | 3.53 | 0.00 % |
| 1995 | 4.24 | 20.11 % |
| 1996 | 4.24 | -0.05 % |
| 1997 | 3.53 | -16.67 % |
| 1998 | 3.53 | 0.00 % |
| 1999 | 3.53 | 0.00 % |
| 2000 | 4.94 | 40.00 % |
| 2001 | 5.65 | 14.29 % |
| 2002 | 3.53 | -37.50 % |
| 2003 | 5.30 | 50.00 % |
| 2004 | 6.00 | 13.33 % |
| 2005 | 9.18 | 52.94 % |
| 2006 | 9.89 | 7.69 % |
| 2007 | 9.71 | -1.79 % |
| 2008 | 9.18 | -5.45 % |
| 2009 | 10.45 | 13.85 % |
| 2010 | 11.65 | 11.49 % |
| 2011 | 8.48 | -27.27 % |
|
|
