Year	% of births
2000	15.75604345
2001	15.73126844
2002	15.69486107
2003	15.66054821
2004	15.64040432
2005	15.63128735
2006	15.61294138
2007	15.58211867
2008	15.50887151
2009	15.41247509
2010	15.29974144
2011	15.17220148
2012	15.05871235
2013	14.94786357
2014	14.83767773
2015	14.73069746
2016	14.62924956
2017	14.535055
2018	14.44261735
2019	14.36008657
2020	14.28142408