Year	Percent
2002	60.76335
2003	61.79563
2004	62.82792
2005	63.8602
2006	64.44515
2007	65.01587
2008	65.57236
2009	66.11461
2010	66.64263
2011	67.15642
2012	67.65598
2013	68.14131
2014	68.6124
2015	69.06926
2016	69.51189
2017	69.94029
2018	70.35446
2019	70.75439
2020	71.14009
2021	71.51156
2022	71.8688