Year	%
2000	51.949575414672765
2001	51.722646903709524
2002	51.603432771757404
2003	51.488037678858156
2004	51.35819020134869
2005	51.148405468859906
2006	50.94852240354674
2007	50.724638379202915
2008	50.481259563118755
2009	50.18166551075643
2010	49.923373274964135
2011	49.70447639365444
2012	49.39378722220393
2013	49.113139040062535
2014	48.782292942516385
2015	48.45917538152775
2016	48.21972915372034
2017	48.112500475091
2018	47.85097492902569
2019	47.66019651420487