Year	Percent
2009	47.80262
2010	29.79716
2011	25.50405
2012	28.82328
2013	28.13971
2014	29.41162
2015	22.85042
2016	16.51796
2017	15.75026
2018	12.06864
2019	12.62964
2020	21.10125
2021	13.37131