Year	Percent
2000	80.31108
2001	80.65502
2002	80.99897
2003	81.34291
2004	81.68685
2005	82.40793
2006	83.13217
2007	83.85957
2008	84.59014
2009	85.32386
2010	86.06075
2011	86.80081
2012	87.54402
2013	88.2904
2014	89.03994
2015	89.79264
2016	90.54851
2017	91.30754
2018	91.97038
2019	92.36765
2020	92.76491
2021	93.16217
2022	93.16217