Year	% of births
2000	19.34426761
2001	19.29317311
2002	19.24181469
2003	19.1739552
2004	19.08844413
2005	18.99732484
2006	18.89085126
2007	18.76911193
2008	18.63613592
2009	18.48927837
2010	18.3514668
2011	18.22383997
2012	18.11548988
2013	18.0298546
2014	17.96641801
2015	17.91827111
2016	17.88144373
2017	17.84725443
2018	17.81782934
2019	17.78873826
2020	17.76020276