Year	% of births
2000	13.31223399
2001	13.28450917
2002	13.25069947
2003	13.20554212
2004	13.16457406
2005	13.12647126
2006	13.08805323
2007	13.05548723
2008	13.01656292
2009	12.98120386
2010	12.94574686
2011	12.90869897
2012	12.86976886
2013	12.82494224
2014	12.77508481
2015	12.72699835
2016	12.6742273
2017	12.62741624
2018	12.58366342
2019	12.54242396
2020	12.51261546