Year	Percent
2000	98.73739
2001	98.70595
2002	98.65138
2003	98.57306
2004	98.49476
2005	98.40641
2006	98.31512
2007	98.22613
2008	98.1392
2009	98.05409
2010	97.9706
2011	97.88854
2012	97.80773
2013	97.72795
2014	97.64909
2015	97.56282
2016	97.47696
2017	97.39147
2018	97.30632
2019	97.22149
2020	97.13695
2021	97.14099
2022	97.14489