Year	Percent
2000	18.56694
2001	20.20443
2002	21.84192
2003	23.47941
2004	25.1169
2005	26.96398
2006	28.83672
2007	30.73511
2008	32.65916
2009	34.60887
2010	36.58423
2011	38.58525
2012	40.61192
2013	42.66425
2014	44.74223
2015	46.84587
2016	48.97517
2017	51.13012
2018	53.31073
2019	55.51699
2020	57.74891
2021	60.00649
2022	61.86205