Year	Percent
2000	82.83883
2001	83.13426
2002	83.42629
2003	83.7183
2004	84.01028
2005	84.30223
2006	84.59417
2007	84.88607
2008	85.17796
2009	85.46982
2010	85.76166
2011	86.05347
2012	86.34525
2013	86.63702
2014	86.92876
2015	87.22047
2016	87.51216
2017	87.80383
2018	88.09547
2019	88.38709
2020	88.67869
2021	88.97026
2022	89.26181