Year	Percent
2000	0.51706
2001	0.44195
2002	0.38589
2003	0.41912
2004	0.41474
2005	0.38058
2006	0.35352
2007	0.3688
2008	0.40692
2009	0.41893
2010	0.46651
2011	0.49056
2012	0.60116
2013	0.58556
2014	0.53762
2015	0.51342
2016	0.522
2017	0.55954
2018	0.54637
2019	0.52263
2020	0.55944
2021	0.53362
2022	0.49569