Year	male births per female births
1960	1.0517307604907777
1961	1.051696472966243
1962	1.0516938157322426
1963	1.051815852192766
1964	1.051888185617459
1965	1.0518906605831948
1966	1.0526317968456291
1967	1.052717353042477
1968	1.052697163529898
1969	1.0535363428112219
1970	1.0543797077132069
1971	1.0543902133820149
1972	1.0552974866798304
1973	1.0553849917916662
1974	1.0569709184521365
1975	1.0578277290490572
1976	1.060169441407948
1977	1.0606584558923708
1978	1.061436783689797
1979	1.06211811891024
1980	1.0636293087598245
1981	1.0646891840797728
1982	1.0636121854567109
1983	1.0637652281317707
1984	1.0645228151795874
1985	1.063900907124908
1986	1.0645179631593027
1987	1.065795316483097
1988	1.066710386905143
1989	1.0654349764904258
1990	1.0670879311005574
1991	1.0698539639801414
1992	1.0714944728818008
1993	1.0743202320928003
1994	1.0779202722233399
1995	1.081067417384847
1996	1.0816920260870149
1997	1.0830721815016948
1998	1.0840114272579653
1999	1.0842291859203204
2000	1.0857046808599915
2001	1.0845358804200467
2002	1.0827753276732057
2003	1.0836889682547795
2004	1.0844180884498222
2005	1.0844591710299516
2006	1.0829306628594937
2007	1.0830919086061017
2008	1.0831667047480114
2009	1.0833335773649988
2010	1.0833440271954542
2011	1.0823020708423121
2012	1.0799502121540794
2013	1.0792014753892012
2014	1.0790172218856773
2015	1.078296612385009
2016	1.076951664794751
2017	1.0754881795108862
2018	1.0740196919090437
2019	1.07248768481867
2020	1.0702070616606885
2021	1.0688336719049767
2022	1.0674878078488013