Year	male births per female births
1960	1.0353314758599825
1961	1.035357710225256
1962	1.0355396711191205
1963	1.0355710255202295
1964	1.0356213495017674
1965	1.0358201989388702
1966	1.0359987591181519
1967	1.0361413923803546
1968	1.0362787741299484
1969	1.0364605737101078
1970	1.0367273384966205
1971	1.0367274722192512
1972	1.0369745754614992
1973	1.0370131071095978
1974	1.0369530388490915
1975	1.0368049217864725
1976	1.036772002848685
1977	1.0366208851035625
1978	1.03658511059733
1979	1.036639923172092
1980	1.0365084571883816
1981	1.03664165758773
1982	1.0367109094479445
1983	1.0368467411913171
1984	1.0370171522710279
1985	1.0370761801869275
1986	1.0372935716007448
1987	1.0376146284513783
1988	1.037662057852763
1989	1.0378221146462128
1990	1.0377941650826035
1991	1.0377705065008174
1992	1.0377922531585655
1993	1.0380059326189108
1994	1.0379392652306043
1995	1.0374397886715836
1996	1.037211421378051
1997	1.0369481993148935
1998	1.036790595640467
1999	1.0364932079229183
2000	1.0362523998609394
2001	1.0358839034866587
2002	1.0353741681302013
2003	1.035166517855322
2004	1.0349229438652654
2005	1.0351504446564144
2006	1.0347715696524784
2007	1.034323685438573
2008	1.0343641826081644
2009	1.0343874654377851
2010	1.0340963585316079
2011	1.0339495966959285
2012	1.0337197660321256
2013	1.0335132855548343
2014	1.0336765677831954
2015	1.0338402573644434
2016	1.034137773651018
2017	1.0341530640198098
2018	1.0343204449830308
2019	1.0341809476673722
2020	1.0342374314356444
2021	1.0342010441950535
2022	1.0342578584205797