Year	male births per female births
1960	1.0375513567965278
1961	1.0375087946997499
1962	1.038012486839544
1963	1.0380524677290959
1964	1.0381271807066044
1965	1.0385931728014606
1966	1.0390614237841829
1967	1.0395742244894361
1968	1.040071663673479
1969	1.0404827229755544
1970	1.0410739862451184
1971	1.0410610507141
1972	1.0416146085516051
1973	1.0415869548673073
1974	1.0415792915271136
1975	1.0411695337830065
1976	1.040805863634282
1977	1.0404706703686302
1978	1.0405394499884966
1979	1.0406748023371295
1980	1.0407188205536175
1981	1.0411191176124397
1982	1.0409509778649264
1983	1.0412521665467878
1984	1.0416502343954948
1985	1.0415102990481422
1986	1.041948405037112
1987	1.0423690932336684
1988	1.0428424670694993
1989	1.0434663853946142
1990	1.043505059989095
1991	1.043241337859476
1992	1.0432969197010737
1993	1.043889704452897
1994	1.043902684372025
1995	1.04320886659104
1996	1.0427761618857556
1997	1.0422522986476712
1998	1.0423665528145885
1999	1.04198603982082
2000	1.0421326883569346
2001	1.042210189686179
2002	1.041365250405569
2003	1.041214756519495
2004	1.0405956046958977
2005	1.0405261527262983
2006	1.0398915087166847
2007	1.0388187901394428
2008	1.0387829453748383
2009	1.038763033870524
2010	1.037840152376477
2011	1.0374330385848898
2012	1.036916414440247
2013	1.036273429310644
2014	1.0366010422594067
2015	1.0369769165749176
2016	1.0374396875576726
2017	1.037479094099247
2018	1.037306717737734
2019	1.0368314782059704
2020	1.036877137651312
2021	1.0368242679797914
2022	1.0367956861410792