Year	male births per female births
1960	1.0548799460300722
1961	1.055705809807912
1962	1.0563440995290114
1963	1.057184630550549
1964	1.0577999599487764
1965	1.0585690249271145
1966	1.0587249412018145
1967	1.0578739209465693
1968	1.0568208444119536
1969	1.055865487459712
1970	1.0563871095079185
1971	1.057469287344306
1972	1.0579453243890957
1973	1.0586728783658452
1974	1.0590264892946795
1975	1.0587812800021479
1976	1.0577283980930248
1977	1.0564602949617463
1978	1.053818571372786
1979	1.0510016607088528
1980	1.0477474906814765
1981	1.0446760015796552
1982	1.0431375010811745
1983	1.0425893580504715
1984	1.0427035640243327
1985	1.041689119147753
1986	1.0418788095405438
1987	1.0426914861074186
1988	1.0452991605414954
1989	1.047356882103921
1990	1.0493337778020544
1991	1.0506240157037774
1992	1.0517482774824458
1993	1.0526401343051335
1994	1.0528082511373344
1995	1.0531866800759286
1996	1.0528734498907246
1997	1.0528537663003403
1998	1.0528012594424445
1999	1.0530393691609952
2000	1.0534247464047224
2001	1.0529137950492813
2002	1.051872766406011
2003	1.0503634602684258
2004	1.0505628532426121
2005	1.0512021469997357
2006	1.0519599121390992
2007	1.0524190617302904
2008	1.052897658200756
2009	1.0534834300355445
2010	1.0531323438068163
2011	1.052934948049011
2012	1.0521151412179424
2013	1.0520165147629248
2014	1.0522863028531224
2015	1.0524043821169364
2016	1.052312757219394
2017	1.0526100162599457
2018	1.0526142478571086
2019	1.0529359099768256
2020	1.052792136642791
2021	1.0528976123059959
2022	1.0527866392656091