Year	Percent
2000	40.01755
2001	40.86455
2002	41.71968
2003	42.58292
2004	43.45428
2005	44.33376
2006	45.22136
2007	46.11708
2008	47.02092
2009	47.93287
2010	48.85294
2011	49.78113
2012	50.71744
2013	51.66187
2014	52.61442
2015	53.57509
2016	54.54387
2017	55.52077
2018	56.50579
2019	57.49893
2020	58.50019
2021	59.50957
2022	60.13957