Year	Percent
2000	27
2001	27
2002	28
2003	30
2004	32
2005	40
2006	47
2007	47
2008	47
2009	50
2010	47
2011	47
2012	51
2013	55
2014	56
2015	60
2016	64
2017	69
2018	75
2019	81
2020	64