Year	% of total
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0.050864699898270596
2008	0.03466204506065858
2009	0.07053429730206312
2010	0.10784162686797104
2011	0.04037685060565276
2012	0.049776007964161276
2013	0.05188067444876784
2014	0.05161290322580645
2015	0.05128862674701885