Year	Percent
2008	11.26114
2009	8.27614
2010	9.45683
2011	8.13257
2012	7.44546
2013	8.43161
2014	8.29871
2015	7.67717
2016	8.17152
2017	7.40872
2018	6.53116
2019	7.23867
2020	7.36201
2021	6.92331
2022	7.35914