Year	Percent
1987	0.1
1989	0.1
1993	0.2
2004	0.2
2005	0.7
2006	0.2
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0.2
2013	0.2
2014	0.7
2015	0.5