Year	Percent
2004	4.62
2007	6.24
2009	4.61
2010	3.57
2011	3.44
2012	3.96
2013	5
2014	5.21
2015	6.68
2016	7.17
2017	7.3
2018	4.79
2019	6.89
2020	7.63