Year	male births per female births
1960	1.049700104039226
1961	1.0494677981744238
1962	1.0497937913402846
1963	1.049666500896841
1964	1.0497235030144436
1965	1.0493214939184787
1966	1.0493339764679284
1967	1.0493297854028778
1968	1.048460302912693
1969	1.048415723132666
1970	1.0481042328999643
1971	1.0479977916199354
1972	1.0477791010396829
1973	1.0471685441073166
1974	1.0464910767230002
1975	1.0469117256496723
1976	1.0464794743514545
1977	1.0464925522985709
1978	1.0462319820969026
1979	1.0468220310339817
1980	1.0470202271887712
1981	1.047423060232859
1982	1.0477155757350014
1983	1.0477626833177411
1984	1.0477101070660533
1985	1.047696025719529
1986	1.0482521734796324
1987	1.0486974314387711
1988	1.048681047673607
1989	1.048963438083742
1990	1.0490128723230523
1991	1.0486412051719545
1992	1.0484643961921143
1993	1.0480304943492385
1994	1.0479376852911968
1995	1.0484914063383612
1996	1.0487968489239512
1997	1.0491283297609177
1998	1.0491825044746723
1999	1.0487640910440676
2000	1.0488273002403665
2001	1.0484676280821073
2002	1.047868405659199
2003	1.0476098583946798
2004	1.0474792074309092
2005	1.0479366780125605
2006	1.0483838108323755
2007	1.0481006265154313
2008	1.0480534372936772
2009	1.047841911281735
2010	1.047754006907777
2011	1.0477141614843004
2012	1.0477649547174523
2013	1.04783495442573
2014	1.0479889967813123
2015	1.0481398309267964
2016	1.0486787186570163
2017	1.0483007411519663
2018	1.0481531918935718
2019	1.0477204915657155
2020	1.0475163738103304
2021	1.0474499677895406
2022	1.0472685524830299