Year	Percent
2000	100
2001	100
2002	100
2003	100
2004	100
2005	100
2006	100
2007	100
2008	100
2009	100
2010	99.9972
2011	99.87454
2012	99.75189
2013	99.62924
2014	99.50659
2015	99.38394
2016	99.26129
2017	99.13864
2018	99.01599
2019	98.89334
2020	98.77069
2021	98.64804
2022	98.52539