Year	%
2000	49.62302927975299
2001	49.44952311901325
2002	49.27666650376012
2003	49.11281876132043
2004	48.887680488368936
2005	48.61855719881644
2006	48.35304944882319
2007	48.03740861412882
2008	47.67003018757963
2009	47.33798163365665
2010	47.00837312661756
2011	46.74166461778049
2012	46.522241603710334
2013	46.29132403622041
2014	46.09161534963776
2015	45.92451067277399
2016	45.75029018062045
2017	45.56341736396047
2018	45.36482541889898
2019	45.189644323553175