Year	%
2000	0.380033285501351
2001	0.371894210749251
2002	0.35979402058072
2003	0.365697000041084
2004	0.327769245425799
2005	0.393209155537626
2006	0.368758402455241
2007	0.343271471135328
2008	0.320091836458657
2009	0.354611267812153
2010	0.345992463149718
2011	0.326819395916546
2012	0.307213692578778
2013	0.292772912804489
2014	0.267646033204212
2015	0.307880819960795
2016	0.307441866468971
2017	0.307988287660602
2018	0.24733282744186
2019	0.238887178143983
2020	0.241702983996239