Year	% of births
2000	12.33587887
2001	12.37863379
2002	12.42922224
2003	12.45562051
2004	12.42526261
2005	12.38740003
2006	12.3366703
2007	12.2544522
2008	12.20032781
2009	12.15606485
2010	12.14097531
2011	12.15501238
2012	12.1979978
2013	12.25772043
2014	12.31392363
2015	12.36658776
2016	12.42105601
2017	12.47426823
2018	12.52125339
2019	12.56637114
2020	12.59960101