Year	% of births
2000	13.48756184
2001	13.47813712
2002	13.48252403
2003	13.47841661
2004	13.47181931
2005	13.44871078
2006	13.40754645
2007	13.36250826
2008	13.34419533
2009	13.33128326
2010	13.33155315
2011	13.33950189
2012	13.33874567
2013	13.31590394
2014	13.29776847
2015	13.26225354
2016	13.24461261
2017	13.23782297
2018	13.23680017
2019	13.23865952
2020	13.23588907