Year	Percent
2000	80.26648
2001	80.59182
2002	80.90891
2003	81.22593
2004	81.54288
2005	81.85977
2006	82.17659
2007	82.49335
2008	82.81004
2009	83.12666
2010	83.44322
2011	83.75971
2012	84.07614
2013	84.39249
2014	84.70878
2015	85.02501
2016	85.34117
2017	85.65726
2018	85.97329
2019	86.28925
2020	86.60514
2021	86.92097
2022	87.23673