Year	Percent
2000	99.68321
2001	99.687
2002	99.68935
2003	99.65066
2004	99.59544
2005	99.5404
2006	99.48554
2007	99.43086
2008	99.37636
2009	99.32204
2010	99.26791
2011	99.21396
2012	99.16029
2013	99.10659
2014	99.05268
2015	99.05797
2016	99.06308
2017	99.06799
2018	99.07268
2019	99.07716
2020	99.08075
2021	99.07053
2022	99.06022