Year	% of births
2000	17.975895591480924
2001	18.06149017313244
2002	18.02488671900673
2003	17.93678678558824
2004	17.75591897656082
2005	17.50004938413683
2006	17.33367630407069
2007	17.11793612008783
2008	16.918684484012893
2009	16.80973264939602
2010	16.64135197343701
2011	16.17205833185054
2012	15.72470032437895
2013	15.853013531885347
2014	15.418938681652074
2015	15.644818609656316
2016	15.232146477938334
2017	15.240048261476211
2018	15.51605431311818
2019	15.470752010232404
2020	15.784381331476432