Year	% of births
2000	16.48843931
2001	16.44847382
2002	16.39365043
2003	16.32141123
2004	16.24644739
2005	16.17242955
2006	16.08973706
2007	16.00518664
2008	15.93038775
2009	15.87034354
2010	15.82933914
2011	15.81446077
2012	15.81643031
2013	15.82263733
2014	15.82486683
2015	15.81858387
2016	15.79061511
2017	15.75454101
2018	15.70602917
2019	15.64313496
2020	15.57640226