Year	Percent
2002	35.22902
2003	36.55752
2004	37.88534
2005	39.19947
2006	40.39526
2007	41.5834
2008	42.76435
2009	43.93725
2010	45.10191
2011	46.25874
2012	47.40691
2013	48.54625
2014	49.67681
2015	50.79837
2016	51.91072
2017	53.01337
2018	54.10659
2019	55.18989
2020	56.26326
2021	57.32603
2022	58.37835