Year	Percent
2000	91.53037
2001	91.53037
2002	91.53037
2003	91.50689
2004	91.48341
2005	91.45994
2006	91.43646
2007	91.41299
2008	91.38951
2009	91.36604
2010	91.34256
2011	91.31908
2012	91.29561
2013	91.27213
2014	91.24866
2015	91.22518
2016	91.20171
2017	91.17823
2018	91.15476
2019	91.13128
2020	91.1078
2021	91.08433
2022	91.06085