Year	Percent
2000	48.39503
2001	49.33868
2002	50.28075
2003	51.22124
2004	52.16014
2005	53.09746
2006	54.0332
2007	54.96735
2008	55.89992
2009	56.83091
2010	57.76031
2011	58.68813
2012	59.61437
2013	60.53903
2014	61.4621
2015	62.38359
2016	63.3035
2017	64.22182
2018	65.13856
2019	66.05372
2020	66.96729
2021	67.87928
2022	68.78969