|
| year | consumption | change |
| 1980 | 296,752.10 | NA |
| 1981 | 303,080.50 | 2.13 % |
| 1982 | 309,555.50 | 2.14 % |
| 1983 | 312,280.40 | 0.88 % |
| 1984 | 332,736.00 | 6.55 % |
| 1985 | 346,788.30 | 4.22 % |
| 1986 | 349,571.60 | 0.80 % |
| 1987 | 350,139.30 | 0.16 % |
| 1988 | 348,809.90 | -0.38 % |
| 1989 | 340,356.30 | -2.42 % |
| 1990 | 321,263.10 | -5.61 % |
| 1991 | | NA |
| 1992 | | NA |
| 1993 | | NA |
| 1994 | | NA |
| 1995 | | NA |
| 1996 | | NA |
| 1997 | | NA |
| 1998 | | NA |
| 1999 | | NA |
| 2000 | | NA |
| 2001 | | NA |
| 2002 | | NA |
| 2003 | | NA |
| 2004 | | NA |
| 2005 | | NA |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
| 2011 | | NA |
|
|
