Year	male births per female births
1960	1.0353314758599828
1961	1.035357710225256
1962	1.0355396711191203
1963	1.0355710255202293
1964	1.0356213495017674
1965	1.0358201989388705
1966	1.0359987591181519
1967	1.0361413923803546
1968	1.0362787741299486
1969	1.0364605737101078
1970	1.0367273384966207
1971	1.0367273791688132
1972	1.0369744612693408
1973	1.037012888553348
1974	1.0369528047390566
1975	1.036804717101366
1976	1.0367717250916137
1977	1.0366206355505148
1978	1.0365849458645995
1979	1.0366398609060399
1980	1.0365084062310954
1981	1.0366416920424468
1982	1.036710932798554
1983	1.0368468381406872
1984	1.0370171507948258
1985	1.0370761738297085
1986	1.037293547791782
1987	1.03761458089254
1988	1.0376620088171031
1989	1.0378220566291207
1990	1.0377941794874748
1991	1.0377705232173866
1992	1.0377922671018651
1993	1.038005932206219
1994	1.037939269401933
1995	1.0374398236441282
1996	1.0372114706073625
1997	1.0369482022314522
1998	1.0367906067126875
1999	1.0364931815209686
2000	1.0362523321784385
2001	1.035883859003585
2002	1.0353740983000324
2003	1.035166459139672
2004	1.0349229003353695
2005	1.0351503880591364
2006	1.0347715342137889
2007	1.0343236705585572
2008	1.0343641192521553
2009	1.0343874473903762
2010	1.0340963979782376
2011	1.0339496453040937
2012	1.0337198711470594
2013	1.0335133932746392
2014	1.0336767085124379
2015	1.0338403920786419
2016	1.0341379419444285
2017	1.0341532291228885
2018	1.034320558478969
2019	1.0341810209608404
2020	1.0342374994647847
2021	1.034201117521843
2022	1.0342579244516745