Year	Percent
1995	1.31
2001	1.2327
2003	2.2835
2004	4.6591
2005	4.7304
2006	5.4857
2007	4.0333
2008	7.0939
2009	2.6327
2010	2.7846
2011	3.1466
2012	4.3407
2013	2.2813
2014	2.1334
2015	1.7134
2016	1.5427
2017	0.7583