Year	Percent
2002	83.85137
2003	84.82055
2004	86.25002
2005	85.36859
2006	84.44151
2007	85.39039
2008	85.4155
2009	86.19111
2010	86.77608
2011	86.89124
2012	86.89889
2013	87.2964
2014	87.39435
2015	87.20186
2016	88.32619
2017	90.1075