Year	% of total energy use
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0.009922454861483682
2006	0.009675439627788088
2007	0.009247724495232852
2008	0.013248392990470401
2009	0.012496615499968756
2010	0.011577231803104493
2011	0
2012	0
2013	0.01199574290612215
2014	0.011918414296553706