Year	Percent
2000	35
2002	38
2003	37
2004	40
2005	37
2006	43
2008	41
2009	41
2010	40
2011	37
2012	33
2013	35
2014	37
2015	34
2016	35
2017	34
2018	30
2019	35
2020	36