Year	Percent
2000	45.4372
2001	46.69804
2002	47.95016
2003	49.19293
2004	50.42625
2005	51.64951
2006	52.86314
2007	54.06704
2008	55.26155
2009	56.44477
2010	57.61844
2011	58.79072
2012	59.95714
2013	61.11167
2014	62.25506
2015	63.38719
2016	64.5094
2017	65.62109
2018	66.72207
2019	67.81213
2020	68.89106
2021	69.94698
2022	70.99072