Year	%
2000	48.44895746198696
2001	48.23707508484543
2002	48.02958321595661
2003	47.82483441523473
2004	47.57466208721509
2005	47.256002899056654
2006	46.94110861150753
2007	46.56879566172614
2008	46.16008726661371
2009	45.76231626651571
2010	45.396527508463464
2011	45.085982318796354
2012	44.84844430129989
2013	44.6236556085869
2014	44.44667516582673
2015	44.29685257594454
2016	44.15723262349531
2017	43.978191529084896
2018	43.821062270483075
2019	43.66696806716615