Year	male births per female births
1960	1.0404337163670472
1961	1.0401923550870278
1962	1.040349793430388
1963	1.0404790729127773
1964	1.0404726310285237
1965	1.0404599291437038
1966	1.040536775402798
1967	1.0405395363203984
1968	1.040397891793006
1969	1.0403477796354332
1970	1.040446985623807
1971	1.0403997953079935
1972	1.0405074623158055
1973	1.0405259135619076
1974	1.040415078852591
1975	1.0404243665701367
1976	1.0405836468926182
1977	1.0406147595038426
1978	1.0407707195519935
1979	1.040968733326158
1980	1.0407529070903063
1981	1.0408752935136683
1982	1.0410440790573232
1983	1.041126101158004
1984	1.0413178675305759
1985	1.041447801543466
1986	1.0415379774481468
1987	1.0415969155298062
1988	1.0414365639707999
1989	1.0413031076530626
1990	1.041172519834748
1991	1.041259600785479
1992	1.0413141704894116
1993	1.0413115904391772
1994	1.0413006082839522
1995	1.04112067720279
1996	1.041272360621553
1997	1.0413245364280919
1998	1.0411012139672455
1999	1.0410498696120152
2000	1.0404882742996333
2001	1.0399097526823933
2002	1.039616507788198
2003	1.039347909699219
2004	1.0390906981438879
2005	1.0392375241382623
2006	1.039099042711916
2007	1.0389549926801456
2008	1.0388174993777537
2009	1.0386971374034135
2010	1.0387110398968684
2011	1.0386401659227724
2012	1.038394930743966
2013	1.0383280126405519
2014	1.0381523364754441
2015	1.0380587486374162
2016	1.0379410344435307
2017	1.0379270864285621
2018	1.03807013880806
2019	1.0380932069802926
2020	1.038009464826394
2021	1.0380255686325472
2022	1.0381182512214882