Year	% of births
2000	14.40768012
2001	14.50143338
2002	14.61645038
2003	14.74560603
2004	14.87932792
2005	15.02372056
2006	15.17817823
2007	15.32778372
2008	15.479538
2009	15.6142154
2010	15.73042939
2011	15.82293586
2012	15.90572962
2013	15.98353889
2014	16.05209531
2015	16.10653888
2016	16.15551238
2017	16.18958117
2018	16.22387481
2019	16.24411633
2020	16.25114353