Year	Percent
2000	3.0631
2002	2.2344
2003	3.3501
2004	3.1008
2005	4.1957
2006	2.5346
2007	2.938
2008	3.079
2009	5.3893
2010	4.463
2011	2.8484
2012	3.1222
2013	5.8667
2014	7.2707
2015	5.3302
2016	3.5018
2017	2.9772