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	100
2012	99.9872
2013	99.96525
2014	99.9446
2015	99.92517
2016	99.90687
2017	99.88961
2018	99.8733
2019	99.8767
2020	99.87994
2021	99.88301
2022	99.88595