Year	%
2000	51.94957541467277
2001	51.722646903709524
2002	51.603432771757404
2003	51.48803767885816
2004	51.3581902013487
2005	51.14840546885991
2006	50.94852240354673
2007	50.724638379202915
2008	50.481259563118755
2009	50.181665510756424
2010	49.923373274964135
2011	49.70447639365444
2012	49.39378722220393
2013	49.113139040062535
2014	48.78229294251638
2015	48.45917538152775
2016	48.21972915372034
2017	48.112500475091
2018	47.85097492902569
2019	47.660196514204884