Year	Percent
2000	38.29632
2001	38.33013
2002	38.3674
2003	38.59077
2004	38.8161
2005	39.04254
2006	39.27077
2007	39.50087
2008	39.73291
2009	39.96663
2010	40.20243
2011	40.44004
2012	40.67953
2013	40.92061
2014	41.16336
2015	41.4078
2016	41.65401
2017	41.90133
2018	42.1505
2019	42.40086
2020	42.6528
2021	42.90563
2022	43.11917