Year	Percent
2002	0.9876
2005	1.4591
2006	2.0303
2007	0.8206
2008	4.7094
2009	1.833
2010	1.5779
2011	2.9747
2012	3.4518
2013	4.6854
2014	5.8884
2015	5.3274
2016	3.6062
2017	3.6526