Year	male births per female births
1960	1.0572013786181929
1961	1.0561305250329673
1962	1.0558792919127478
1963	1.0554633610717585
1964	1.0564990131262872
1965	1.0567708517799774
1966	1.0552847929876377
1967	1.0555448453853358
1968	1.0554848572287279
1969	1.0561917189261678
1970	1.0570890203726548
1971	1.0578789815034995
1972	1.058793787420869
1973	1.0576970229631764
1974	1.0575769433914572
1975	1.0598357081997962
1976	1.0594247566910233
1977	1.0605692489859153
1978	1.0605341085909232
1979	1.060080354177257
1980	1.0607054934071067
1981	1.0608660086202408
1982	1.0607412080990362
1983	1.059702094895938
1984	1.0591249644894898
1985	1.0575805278833352
1986	1.0579099953438622
1987	1.0592705749125702
1988	1.0581059361273646
1989	1.0561961195439182
1990	1.0575800129551776
1991	1.0574677648264275
1992	1.0574366958991779
1993	1.05759026681536
1994	1.0582396781679633
1995	1.0568279123181883
1996	1.0578467416454402
1997	1.0569637252070958
1998	1.0569450791362351
1999	1.0570842066313346
2000	1.056856259820043
2001	1.0552347061459066
2002	1.055627458692952
2003	1.0547166183363381
2004	1.0556857552301688
2005	1.05599860565033
2006	1.05595889346068
2007	1.0551379138725465
2008	1.0545586971951213
2009	1.054872962622238
2010	1.0532235816240003
2011	1.0540466452089594
2012	1.054927886343609
2013	1.0542556319579528
2014	1.0548030147686158
2015	1.054459727443115
2016	1.0532370473921857
2017	1.0544086511611666
2018	1.0541955779281171
2019	1.0533623620362251
2020	1.0539907020092796
2021	1.0544164806082819
2022	1.0551576488724328