Year	%
2000	0.601461265365146
2001	0.606185887221608
2002	0.521206458661706
2003	0.55317887299612
2004	0.591195151969765
2005	0.612934452362045
2006	0.65198033094833
2007	0.66980388614266
2008	0.698468567434453
2009	0.591150652049418
2010	0.504026481801442
2011	0.736165234847263
2012	0.848679673854972
2013	0.468739153272406
2014	0.592763195321183
2015	0.613601594268455
2016	0.45235005211867
2017	0.328464636011952
2018	0.48975829344054
2019	0.356622901103076
2020	0.565366288020058