Year	Percent
2005	8.74
2006	6.22
2007	5.53
2008	5.54
2009	5.99
2010	7.48
2011	8.02
2012	6.96
2013	9.9
2014	11.87
2015	11.02
2016	12.6
2017	10.79
2018	10.66
2019	10.93
2020	17.84