Year	Percent
2000	47.05179
2001	47.07315
2002	47.09451
2003	47.11587
2004	47.13723
2005	48.44528
2006	49.74985
2007	51.05047
2008	52.34713
2009	53.63931
2010	54.93259
2011	56.22718
2012	57.52277
2013	58.82006
2014	60.11818
2015	61.41891
2016	62.72079
2017	64.02454
2018	65.33031
2019	66.63824
2020	66.72264
2021	66.81163
2022	66.90521