Year	Percent
2002	4.0029
2003	1.7524
2005	2.0927
2006	1.8605
2007	2.4083
2008	2.6292
2009	3.8273
2010	2.6394
2011	2.5591
2012	1.5379
2014	3.0311
2015	4.0453
2016	6.302
2017	7.5669