Year	Percent
2000	55.29963
2001	55.75649
2002	56.19873
2003	56.6256
2004	57.03742
2005	57.4335
2006	57.81476
2007	58.18054
2008	58.53111
2009	58.86584
2010	59.18586
2011	59.49053
2012	59.78007
2013	60.05416
2014	60.313
2015	60.55654
2016	60.78445
2017	60.9967
2018	61.19347
2019	61.37447
2020	61.53966
2021	61.68898
2022	61.77613