Year	Percent
2001	3.59557
2002	2.67818
2003	2.36822
2004	2.2616
2005	1.77951
2007	1.11982
2008	1.04
2009	1.20775
2010	1.27053
2011	1.08831
2012	0.98224
2013	0.87884
2014	0.85129
2015	0.75164
2016	0.84043
2017	0.90879