Year	male births per female births
1960	1.035331475859983
1961	1.0353577102252562
1962	1.0355396711191205
1963	1.0355710255202288
1964	1.0356213495017679
1965	1.03582019893887
1966	1.0359987591181519
1967	1.036141392380355
1968	1.0362787741299488
1969	1.0364605737101078
1970	1.0367273384966202
1971	1.0367273791688127
1972	1.0369744612693408
1973	1.0370128885533483
1974	1.0369528047390568
1975	1.036804717101366
1976	1.0367717250916133
1977	1.0366206355505148
1978	1.0365849458645993
1979	1.0366398609060399
1980	1.0365084062310954
1981	1.0366416920424468
1982	1.036710932798554
1983	1.0368468381406872
1984	1.0370171507948258
1985	1.0370761738297085
1986	1.0372935477917817
1987	1.03761458089254
1988	1.0376620088171031
1989	1.0378220566291205
1990	1.0377941794874748
1991	1.0377705232173866
1992	1.037792267101865
1993	1.0380059322062185
1994	1.037939269401933
1995	1.0374398236441282
1996	1.0372114706073625
1997	1.036948202231452
1998	1.0367906067126875
1999	1.0364931815209686
2000	1.0362523321784385
2001	1.0358838590035853
2002	1.0353740983000326
2003	1.035166459139672
2004	1.0349229003353697
2005	1.0351503880591366
2006	1.0347715342137886
2007	1.0343236705585572
2008	1.034364119252155
2009	1.0343874473903762
2010	1.0340963979782374
2011	1.0339496453040937
2012	1.033719871147059
2013	1.0335133932746392
2014	1.033676708512438
2015	1.033840392078642
2016	1.0341379419444288
2017	1.0341532291228883
2018	1.034320558478969
2019	1.0341810209608406
2020	1.0342374994647845
2021	1.0342011175218428
2022	1.0342579244516745