Year	male births per female births
1960	1.0581177959730366
1961	1.0576505077957472
1962	1.0573048679959258
1963	1.057525921582319
1964	1.0575503778464572
1965	1.0573580333009727
1966	1.0568615308680374
1967	1.0564508926833067
1968	1.0558964879019603
1969	1.0563805672062245
1970	1.0566912836999827
1971	1.05706782121837
1972	1.0576132605520787
1973	1.057435866020341
1974	1.0565739469420432
1975	1.0578111767814224
1976	1.0577002589117634
1977	1.057037884651674
1978	1.0573109824670703
1979	1.0571715544866775
1980	1.0563270288838458
1981	1.0567815694944618
1982	1.057396201045353
1983	1.0570847161779877
1984	1.057366716452996
1985	1.0567270029597797
1986	1.05657027978225
1987	1.0584242533341641
1988	1.0576831029513896
1989	1.0578815127274357
1990	1.058215921080694
1991	1.0589148100084087
1992	1.0588312636134187
1993	1.0590897964675727
1994	1.059709097552817
1995	1.059630808610568
1996	1.060914166151548
1997	1.060877660145952
1998	1.0613979569707013
1999	1.0623081680745563
2000	1.0621792510166186
2001	1.0610351232251303
2002	1.061160140864301
2003	1.0605251153355355
2004	1.0606364440944935
2005	1.060174888753458
2006	1.0597496995519606
2007	1.0599701231418512
2008	1.0597296596838808
2009	1.0601996648107406
2010	1.0601659851320995
2011	1.0603261559435317
2012	1.060901629125878
2013	1.0604704335261326
2014	1.0611644496774941
2015	1.0611165890945304
2016	1.060252008382535
2017	1.0601307135493518
2018	1.0602559045321491
2019	1.059908793401008
2020	1.0598164150899712
2021	1.0594815343878223
2022	1.0597648470884713