Year	% of births
2000	13.99303166
2001	13.98391478
2002	13.95556959
2003	13.91752774
2004	13.87594524
2005	13.83678542
2006	13.80827641
2007	13.79484233
2008	13.79687222
2009	13.79874251
2010	13.80429939
2011	13.81452753
2012	13.82320593
2013	13.83321286
2014	13.84208702
2015	13.83504629
2016	13.81293445
2017	13.77859159
2018	13.74843688
2019	13.72304818
2020	13.71833802