Year	Percent
2000	31.98625
2001	33.84087
2002	35.73418
2003	37.66619
2004	39.63689
2005	41.64629
2006	43.69439
2007	45.78118
2008	47.90666
2009	50.07084
2010	52.27372
2011	54.51529
2012	56.79556
2013	59.11453
2014	61.47219
2015	63.86854
2016	66.3036
2017	68.77734
2018	71.28979
2019	73.84093
2020	76.43076
2021	79.05929
2022	79.05929