Year	Percent
2000	100
2001	100
2002	100
2003	100
2004	100
2005	100
2006	100
2007	100
2008	100
2009	100
2010	100
2011	99.99566
2012	99.98846
2013	99.98139
2014	99.97446
2015	99.96767
2016	99.96102
2017	99.95453
2018	99.94819
2019	99.94202
2020	99.93602
2021	99.93018
2022	99.92452