Year	Percent
2002	50.62385
2003	52.14647
2004	53.66761
2005	55.17522
2006	56.68125
2007	58.18566
2008	59.68904
2009	61.70332
2010	63.73992
2011	65.79894
2012	67.8794
2013	69.98087
2014	72.10317
2015	74.24583
2016	76.40837
2017	78.59012
2018	80.79101
2019	82.38412
2020	83.97422
2021	85.56091
2022	87.01864