Year	Percent
2005	3.79
2006	2.87
2007	2.68
2008	2.53
2009	2.61
2010	3.16
2011	3.55
2012	2.96
2013	4.91
2014	6.15
2015	4.89
2016	4.99
2017	4.15
2018	4.41
2019	4.8
2020	9.77