Year	% of births
2000	15.99325612
2001	15.94270369
2002	15.89643864
2003	15.83728671
2004	15.77934655
2005	15.71293856
2006	15.64503693
2007	15.57695445
2008	15.52164354
2009	15.47654176
2010	15.44108379
2011	15.41177174
2012	15.3834843
2013	15.36166448
2014	15.33014407
2015	15.29935908
2016	15.26990253
2017	15.2425663
2018	15.21473053
2019	15.18945806
2020	15.1601429