Year	male births per female births
1960	1.0600331867927542
1961	1.058957222434658
1962	1.0582511375881873
1963	1.0576208965954734
1964	1.058373911610729
1965	1.0583083663583301
1966	1.0572704389343754
1967	1.0569233828106377
1968	1.056634445406418
1969	1.057685791650693
1970	1.0583712491073274
1971	1.0587240519353276
1972	1.0597358341022007
1973	1.0587219652629798
1974	1.0592381354003004
1975	1.060349079722309
1976	1.0600274066949487
1977	1.0600959328261683
1978	1.059634337163909
1979	1.05984772800887
1980	1.0593384329016569
1981	1.0594667660949402
1982	1.0596468479486358
1983	1.0588463377708612
1984	1.0584899576195117
1985	1.0569983889586907
1986	1.056798506647372
1987	1.0581676967672111
1988	1.0571189912903691
1989	1.0561061288217741
1990	1.0568396773321684
1991	1.0574872109106042
1992	1.057161223124691
1993	1.056935513463873
1994	1.0571981908718433
1995	1.0570165775731053
1996	1.0581669613577378
1997	1.0581027619235268
1998	1.057645429435188
1999	1.057718808743816
2000	1.0578105422129125
2001	1.0565324214081195
2002	1.0567017492352415
2003	1.0560256672346313
2004	1.0567070076882867
2005	1.056644327445579
2006	1.0564664051979227
2007	1.0555441417250009
2008	1.055285683726524
2009	1.0556237228958858
2010	1.0550930035353092
2011	1.0550417740779765
2012	1.0557267979469824
2013	1.0550880677390295
2014	1.0556136275337582
2015	1.0554697242466293
2016	1.0539130685243934
2017	1.0546594480349196
2018	1.0547323920393479
2019	1.054072953415408
2020	1.0546977904065817
2021	1.0549767578423899
2022	1.0556886686578288