Year	Percent
2000	99.12999
2001	99.12955
2002	99.12825
2003	99.12697
2004	99.1257
2005	99.12445
2006	99.1232
2007	99.12197
2008	99.12076
2009	99.11956
2010	99.11837
2011	99.11719
2012	99.11602
2013	99.11486
2014	99.1137
2015	99.11256
2016	99.11142
2017	99.1103
2018	99.10918
2019	99.10806
2020	99.10696
2021	99.10587
2022	99.10479