Year	male births per female births
1960	1.0551398255680324
1961	1.0559829184722398
1962	1.056652990549965
1963	1.057598207727152
1964	1.0582261129356088
1965	1.0590758169824719
1966	1.059296251796207
1967	1.0584279606875564
1968	1.057323929375666
1969	1.056385566896118
1970	1.0569349553037772
1971	1.0581668377435047
1972	1.0586932941013005
1973	1.059589276694365
1974	1.0599620935674208
1975	1.0597481722760766
1976	1.0585402627878642
1977	1.0571694820730817
1978	1.0543747528853376
1979	1.0513070069565913
1980	1.047824456955591
1981	1.0444130281448483
1982	1.0426491267829203
1983	1.0419789882565045
1984	1.0420213379446435
1985	1.0409935872521279
1986	1.0411480093568972
1987	1.04204361590903
1988	1.0449312731318203
1989	1.047193489723927
1990	1.0492715817376768
1991	1.0507004011913876
1992	1.0519828291553286
1993	1.05300079536019
1994	1.0531909801712624
1995	1.053635881320369
1996	1.0532843716129008
1997	1.0532709792712969
1998	1.0532206054811692
1999	1.0534658970851194
2000	1.0539256500596663
2001	1.0534237816577188
2002	1.052302929580981
2003	1.0505770522444045
2004	1.0507395466382665
2005	1.0515042165129787
2006	1.05236664639001
2007	1.052937287206428
2008	1.0535677469106568
2009	1.054275755953207
2010	1.053739133114067
2011	1.0535211634912744
2012	1.0525032010686663
2013	1.0522314924357659
2014	1.0524259000667098
2015	1.0524539601579461
2016	1.0523711218293121
2017	1.0528350977801901
2018	1.0529644436861954
2019	1.0533812291402507
2020	1.0531901484158355
2021	1.0533062640138184
2022	1.0531698807752792