Year	Percent
2003	1.75654
2004	1.88442
2005	2.04057
2006	2.16911
2007	2.13858
2008	4.14313
2009	3.27654
2010	2.58181
2011	3.04308
2012	2.46327
2013	2.30131
2014	2.39657
2015	2.81892
2016	2.61069