Year	Percent
2000	70.71394
2001	70.29212
2002	69.86109
2003	69.42087
2004	68.97145
2005	68.51283
2006	68.04502
2007	67.568
2008	67.08178
2009	66.58637
2010	66.08176
2011	65.56795
2012	65.04494
2013	64.51273
2014	63.97132
2015	63.42071
2016	62.86091
2017	62.2919
2018	61.7137
2019	61.1263
2020	60.52969
2021	59.92389
2022	59.3089