Year	Percent
2000	55
2001	58
2002	52
2003	58
2004	55
2005	51
2006	49
2007	48
2008	47
2009	45
2010	43
2011	41
2012	45
2013	43
2014	44
2015	48
2016	51
2017	58
2018	56
2019	62
2020	56