|
| year | consumption | change |
| 1980 | 198.42 | NA |
| 1981 | 132.28 | -33.33 % |
| 1982 | 67.24 | -49.17 % |
| 1983 | 63.93 | -4.92 % |
| 1984 | 83.78 | 31.03 % |
| 1985 | 154.32 | 84.21 % |
| 1986 | 123.46 | -20.00 % |
| 1987 | 119.05 | -3.57 % |
| 1988 | 67.24 | -43.52 % |
| 1989 | 60.63 | -9.84 % |
| 1990 | 69.45 | 14.55 % |
| 1991 | 78.07 | 12.42 % |
| 1992 | 104.72 | 34.13 % |
| 1993 | 39.68 | -62.11 % |
| 1994 | 35.27 | -11.11 % |
| 1995 | 29.76 | -15.62 % |
| 1996 | 16.53 | -44.44 % |
| 1997 | 18.74 | 13.33 % |
| 1998 | 20.94 | 11.76 % |
| 1999 | 23.15 | 10.53 % |
| 2000 | 8.82 | -61.90 % |
| 2001 | 3.31 | -62.50 % |
| 2002 | 47.40 | 1,333.34 % |
| 2003 | 25.35 | -46.51 % |
| 2004 | 3.31 | -86.96 % |
| 2005 | 8.82 | 166.67 % |
| 2006 | 8.82 | 0.00 % |
| 2007 | 8.82 | 0.00 % |
| 2008 | 12.13 | 37.50 % |
| 2009 | 8.82 | -27.27 % |
| 2010 | 8.82 | 0.00 % |
| 2011 | 8.82 | 0.00 % |
|
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