Year	% of births
2000	15.24848711
2001	15.29938331
2002	15.34933698
2003	15.39632984
2004	15.44503538
2005	15.49225883
2006	15.53855276
2007	15.57579157
2008	15.60728734
2009	15.62373545
2010	15.66784952
2011	15.75199546
2012	15.88767893
2013	16.09137083
2014	16.25378574
2015	16.35429359
2016	16.38933395
2017	16.36289614
2018	16.34634167
2019	16.34442942
2020	16.35473066