|
| year | consumption | change |
| 1980 | 2.20 | NA |
| 1981 | 2.20 | 0.00 % |
| 1982 | 36.38 | 1,550.00 % |
| 1983 | 45.19 | 24.24 % |
| 1984 | 62.83 | 39.02 % |
| 1985 | 38.58 | -38.60 % |
| 1986 | 160.94 | 317.14 % |
| 1987 | 145.95 | -9.32 % |
| 1988 | 5.07 | -96.53 % |
| 1989 | 7.83 | 54.35 % |
| 1990 | 2.29 | -70.70 % |
| 1991 | 3.86 | 68.27 % |
| 1992 | 2.98 | -22.86 % |
| 1993 | 3.37 | 13.33 % |
| 1994 | 4.41 | 30.72 % |
| 1995 | 6.61 | 50.00 % |
| 1996 | 3.31 | -50.00 % |
| 1997 | 3.31 | 0.00 % |
| 1998 | 3.31 | 0.00 % |
| 1999 | 2.20 | -33.33 % |
| 2000 | 2.20 | 0.00 % |
| 2001 | 1.10 | -50.00 % |
| 2002 | 29.76 | 2,600.00 % |
| 2003 | 105.82 | 255.56 % |
| 2004 | 28.66 | -72.92 % |
| 2005 | 103.62 | 261.54 % |
| 2006 | 78.26 | -24.47 % |
| 2007 | 76.06 | -2.82 % |
| 2008 | 80.47 | 5.80 % |
| 2009 | 111.33 | 38.36 % |
| 2010 | 120.15 | 7.92 % |
| 2011 | 156.53 | 30.28 % |
|
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