|
| year | consumption | change |
| 1980 | 37.79 | NA |
| 1981 | 76.00 | 101.11 % |
| 1982 | 50.00 | -34.21 % |
| 1983 | 81.20 | 62.40 % |
| 1984 | 97.00 | 19.46 % |
| 1985 | 108.00 | 11.34 % |
| 1986 | 116.00 | 7.41 % |
| 1987 | 130.70 | 12.67 % |
| 1988 | 133.14 | 1.87 % |
| 1989 | 165.98 | 24.67 % |
| 1990 | 131.00 | -21.07 % |
| 1991 | 168.00 | 28.24 % |
| 1992 | 173.04 | 3.00 % |
| 1993 | 178.34 | 3.06 % |
| 1994 | 160.68 | -9.90 % |
| 1995 | 183.28 | 14.07 % |
| 1996 | 192.82 | 5.21 % |
| 1997 | 206.59 | 7.14 % |
| 1998 | 208.36 | 0.85 % |
| 1999 | 219.31 | 5.25 % |
| 2000 | 237.67 | 8.37 % |
| 2001 | 219.31 | -7.73 % |
| 2002 | 224.60 | 2.42 % |
| 2003 | 300.53 | 33.81 % |
| 2004 | 329.14 | 9.52 % |
| 2005 | 365.86 | 11.16 % |
| 2006 | 385.64 | 5.41 % |
| 2007 | 374.34 | -2.93 % |
| 2008 | 433.49 | 15.80 % |
| 2009 | 146.91 | -66.11 % |
| 2010 | 177.63 | 20.91 % |
| 2011 | 190.70 | 7.36 % |
|
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