Year kWh 1992 0 1993 0 1994 0 1995 0 1996 0 1997 1000000 1998 1000000 1999 1000000 2000 1000000 2001 1000000 2002 1000000 2003 1000000 2004 1000000 2005 1000000 2006 2000000 2007 2000000 2008 2000000 2009 2000000 2010 2000000 2011 2000000 2012 2000000 2013 2000000 2014 2000000 2015 2000000