Year	% of births
2000	20.28646609
2001	20.17004015
2002	20.05806773
2003	19.93867889
2004	19.81967548
2005	19.70215347
2006	19.58883727
2007	19.49865261
2008	19.41973269
2009	19.34464915
2010	19.2592351
2011	19.16702978
2012	19.07206674
2013	18.98745966
2014	18.90736753
2015	18.83219324
2016	18.75670772
2017	18.68069059
2018	18.60022978
2019	18.53367271
2020	18.46865415