Year	male births per female births
1960	1.0453214473783434
1961	1.0453144904201683
1962	1.0456113356890198
1963	1.0455925608771548
1964	1.0455188430565128
1965	1.0455735214576904
1966	1.0456138461869533
1967	1.0457217242745542
1968	1.0455857369095227
1969	1.0456253969514488
1970	1.0459923120667627
1971	1.0460609362199629
1972	1.0463975161444132
1973	1.0464280209476289
1974	1.0460950482923552
1975	1.0459016650131068
1976	1.0459965512766451
1977	1.0457701833776913
1978	1.0460553704312077
1979	1.0460230153315222
1980	1.0457705902492225
1981	1.0459493828137292
1982	1.0461849092811808
1983	1.04645532186609
1984	1.0468798016520922
1985	1.0466795182416182
1986	1.0470759187963505
1987	1.047476972278572
1988	1.0475449522587628
1989	1.047806003908301
1990	1.0478739220350897
1991	1.047687137316568
1992	1.04774213034107
1993	1.0480518942732682
1994	1.0479220197398411
1995	1.0472410658803526
1996	1.0472778403038028
1997	1.0469237011920562
1998	1.0468289102993003
1999	1.0467044556240288
2000	1.046490201082256
2001	1.0461666460548482
2002	1.0456435222198468
2003	1.0454654364971772
2004	1.0449107991643483
2005	1.0449961402046681
2006	1.0444622489420825
2007	1.0436993961115228
2008	1.0434494113756692
2009	1.0433137618489627
2010	1.042791045819838
2011	1.0424260240426884
2012	1.0419580909200898
2013	1.0415397680999006
2014	1.0416014088633179
2015	1.041690616064741
2016	1.0417394033878749
2017	1.041552252229362
2018	1.0415532665620604
2019	1.0412173084846257
2020	1.041083303002963
2021	1.0409369574085827
2022	1.0409372533285617