Year	male births per female births
1960	1.051730760490778
1961	1.0516964729662428
1962	1.0516938157322426
1963	1.051815852192766
1964	1.051888185617459
1965	1.0518906605831948
1966	1.0526317968456291
1967	1.052717353042477
1968	1.0526971635298976
1969	1.0535363428112219
1970	1.0543797077132069
1971	1.0543902133820149
1972	1.0552974866798306
1973	1.0553849917916664
1974	1.0569709184521368
1975	1.0578277290490572
1976	1.060169441407948
1977	1.0606584558923708
1978	1.061436783689797
1979	1.06211811891024
1980	1.0636293087598245
1981	1.0646891840797728
1982	1.063612185456711
1983	1.0637652281317709
1984	1.0645228151795874
1985	1.0639009071249077
1986	1.0645179631593025
1987	1.0657953164830969
1988	1.066710386905143
1989	1.0654349764904258
1990	1.0670879311005572
1991	1.0698539639801414
1992	1.071494472881801
1993	1.0743202320928003
1994	1.0779202722233399
1995	1.081067417384847
1996	1.081692026087015
1997	1.0830721815016946
1998	1.0840114272579653
1999	1.0842291859203201
2000	1.0857046808599915
2001	1.0845358804200471
2002	1.082775327673206
2003	1.083688968254779
2004	1.084418088449822
2005	1.0844591710299518
2006	1.0829306628594935
2007	1.0830919086061017
2008	1.0831667047480116
2009	1.0833335773649988
2010	1.0833440271954542
2011	1.0823020708423121
2012	1.0799502121540794
2013	1.0792014753892014
2014	1.079017221885677
2015	1.078296612385009
2016	1.076951664794751
2017	1.0754881795108862
2018	1.074019691909044
2019	1.0724876848186695
2020	1.0702070616606885
2021	1.068833671904977
2022	1.0674878078488008