Year	Percent
2000	46.4769
2001	46.78549
2002	47.09409
2003	47.40268
2004	47.71128
2005	48.23312
2006	48.7577
2007	49.28502
2008	49.81508
2009	50.34788
2010	50.88343
2011	51.42171
2012	51.96274
2013	52.50651
2014	53.05301
2015	53.60226
2016	54.15425
2017	54.70898
2018	55.26645
2019	55.82666
2020	56.38962
2021	56.95531
2022	56.95531