Year	Percent
2000	14.08576
2001	16.72349
2002	19.53662
2003	22.36877
2004	25.22008
2005	28.08954
2006	30.97731
2007	33.8835
2008	36.80784
2009	39.74941
2010	42.70832
2011	45.68459
2012	48.68031
2013	51.69445
2014	54.72652
2015	57.77572
2016	60.84126
2017	63.83039
2018	66.74812
2019	69.66315
2020	72.5751
2021	75.48374
2022	78.38856