Year	Percent
2000	8.2
2002	5.7042
2003	4.905
2004	4.5188
2005	4.8542
2006	3.8513
2007	3.87
2008	3.6398
2009	3.8576
2010	3.1934
2011	3.2901
2012	2.774
2013	2.9755
2014	2.8665
2015	3.0329
2016	3.5026
2017	3.4238