Year	Percent
2000	57.56042
2001	57.74084
2002	57.26702
2003	56.80008
2004	56.34176
2005	55.89188
2006	55.45223
2007	54.97087
2008	54.45223
2009	53.93546
2010	53.4217
2011	52.91149
2012	52.40498
2013	51.90267
2014	51.40548
2015	50.91355
2016	50.42741
2017	49.94632
2018	49.47116
2019	49.00285
2020	48.54099
2021	49.02263
2022	49.50587