Year	Percent
2000	30.92152
2001	32.25004
2002	33.61335
2003	34.97942
2004	36.34824
2005	37.71981
2006	39.09413
2007	40.47121
2008	41.85104
2009	43.23363
2010	44.61896
2011	46.00705
2012	47.3979
2013	48.79149
2014	50.18784
2015	51.58695
2016	52.9888
2017	54.39341
2018	55.80077
2019	57.21089
2020	58.62376
2021	59.97843
2022	61.33311