Year	male births per female births
1960	1.0550634462802815
1961	1.0546656679776765
1962	1.057103200424135
1963	1.0575877556230937
1964	1.0574695030049508
1965	1.0574974083859858
1966	1.057193009512088
1967	1.0575536362336035
1968	1.0575158509667413
1969	1.0572351456801112
1970	1.0577742541223576
1971	1.057485960943223
1972	1.0576159657394106
1973	1.0575310573686916
1974	1.0575943423369827
1975	1.0578557215194322
1976	1.0579878812768206
1977	1.058153977043887
1978	1.0582816075363384
1979	1.0582171231593334
1980	1.058426211104092
1981	1.0597208153808766
1982	1.061122537939827
1983	1.062092886059796
1984	1.0636063855226563
1985	1.0665345468184126
1986	1.0697105740152402
1987	1.0736424415018737
1988	1.0772015067875524
1989	1.0806808770697578
1990	1.084318645934001
1991	1.0868561920074864
1992	1.0893041942697308
1993	1.0929444695862134
1994	1.0962581531159916
1995	1.0989402458181246
1996	1.1016944939880935
1997	1.1039630770423048
1998	1.104994075134356
1999	1.1052340629543913
2000	1.1058723946318263
2001	1.1056553745456963
2002	1.105916334011022
2003	1.1055029709522184
2004	1.1055177372688432
2005	1.1058016165057916
2006	1.1049368905502042
2007	1.1045877212575557
2008	1.1036728611300684
2009	1.1029356458982484
2010	1.1015732153123736
2011	1.1031627603128933
2012	1.103940315458826
2013	1.0993453814965808
2014	1.0985983894835063
2015	1.0932303226915627
2016	1.094393342950835
2017	1.0907536138348064
2018	1.085477324802022
2019	1.0830600826553496
2020	1.0774832380503754
2021	1.073877869926066
2022	1.0710077788893193