Year	% of births
2000	25.5180785
2001	25.4024139
2002	25.28963506
2003	25.18186299
2004	25.07739343
2005	24.97399902
2006	24.8711381
2007	24.76584874
2008	24.6408115
2009	24.51937748
2010	24.38551476
2011	24.24461105
2012	24.11875671
2013	23.99375464
2014	23.8744153
2015	23.75450733
2016	23.61539682
2017	23.47133018
2018	23.3203247
2019	23.17438682
2020	23.02724006