Year	Percent
2000	50.66312
2001	51.23448
2002	51.80933
2003	52.38733
2004	52.96843
2005	53.55263
2006	54.14023
2007	54.73087
2008	55.3252
2009	55.92217
2010	56.52312
2011	57.12766
2012	57.73543
2013	58.3474
2014	58.96254
2015	59.58147
2016	60.20415
2017	60.83055
2018	61.46062
2019	62.09432
2020	62.20712
2021	62.32256
2022	62.44098