Year	male births per female births
1960	1.043047364782904
1961	1.0429813769472396
1962	1.0431288371557763
1963	1.043121350721201
1964	1.0434624059606517
1965	1.0435382412380785
1966	1.0436766468200103
1967	1.0433372025674204
1968	1.0434757833326094
1969	1.0432335361690552
1970	1.0430297473681398
1971	1.0427066917939751
1972	1.0425629647075554
1973	1.042722127584917
1974	1.0425677564070754
1975	1.0428831958109555
1976	1.0432763373016374
1977	1.0433661596097739
1978	1.0435890511559547
1979	1.0432050877239432
1980	1.0432300341241616
1981	1.0431380192734416
1982	1.0431310396560511
1983	1.043773746422844
1984	1.0440010571312466
1985	1.0438549768629306
1986	1.0439907751264483
1987	1.044109618411969
1988	1.0442306720592414
1989	1.0445983521417628
1990	1.0446125654853609
1991	1.0444402110289956
1992	1.044294450454939
1993	1.044310105254567
1994	1.044136313806381
1995	1.044380368195895
1996	1.0442692887796932
1997	1.0440535460358946
1998	1.0441067310102952
1999	1.0440510684178081
2000	1.0439851783774732
2001	1.0441226099566148
2002	1.044125461800713
2003	1.0442218718955065
2004	1.044146436900429
2005	1.0441256749662855
2006	1.0446633522358775
2007	1.0447555257919219
2008	1.0446607278286109
2009	1.044633369919683
2010	1.0445856804448932
2011	1.044600415489218
2012	1.044454798545607
2013	1.0443011461914387
2014	1.044213864598819
2015	1.0440626115981135
2016	1.0439247333119501
2017	1.0436951736887379
2018	1.0437117582371467
2019	1.043666386118143
2020	1.043597038101423
2021	1.043638977552581
2022	1.043514287517888