Year	% of births
2000	15.63853732
2001	15.59952717
2002	15.56616979
2003	15.53114728
2004	15.49421624
2005	15.44911504
2006	15.39329585
2007	15.33892552
2008	15.28578186
2009	15.23796697
2010	15.18630295
2011	15.13173531
2012	15.08527363
2013	15.03630739
2014	14.99738274
2015	14.97183445
2016	14.94092705
2017	14.91600338
2018	14.88147374
2019	14.82977363
2020	14.77690155