Year	Percent
2000	98.08179
2001	98.0099
2002	97.938
2003	97.86611
2004	97.79421
2005	97.72231
2006	97.65042
2007	97.57852
2008	97.50663
2009	97.43473
2010	97.36284
2011	97.29094
2012	97.21904
2013	97.14715
2014	97.07525
2015	97.00336
2016	97.00336
2017	97.00336
2018	97.00336
2019	97.00336