Year	male births per female births
1960	1.0498010624199228
1961	1.0505994212927015
1962	1.0486033348078563
1963	1.0522040269790127
1964	1.0488037301589366
1965	1.0515003335705155
1966	1.049480767795424
1967	1.050190094182735
1968	1.053374694061865
1969	1.0533702769109368
1970	1.05453330167837
1971	1.0529362783351395
1972	1.0519738355369717
1973	1.0528049536030484
1974	1.0552996711273426
1975	1.0542078302365712
1976	1.0533061853782637
1977	1.0533955134065074
1978	1.0530958989897248
1979	1.0525732918305781
1980	1.0532811246892018
1981	1.052284431120118
1982	1.0512800578217611
1983	1.0524723555663529
1984	1.0506595310715856
1985	1.0524645567139637
1986	1.0510917569124878
1987	1.05
1988	1.0499999999999998
1989	1.0500892181415007
1990	1.0494512689628803
1991	1.0467160782209133
1992	1.0503572307050946
1993	1.050619690905319
1994	1.0488884835639163
1995	1.0494413144502388
1996	1.0477766506585182
1997	1.0484972956064535
1998	1.0473206440307385
1999	1.0493139239280593
2000	1.048521748876718
2001	1.04661443820476
2002	1.0484519283179874
2003	1.049225606421598
2004	1.0493796600418925
2005	1.0493061351176851
2006	1.0494631378813286
2007	1.0473163361406705
2008	1.0483281313245065
2009	1.0484221191365106
2010	1.0484310973254591
2011	1.0493470781427945
2012	1.0478792765089278
2013	1.049442975136124
2014	1.0482642399565503
2015	1.0482617561970609
2016	1.0474415575042306
2017	1.0486242659547538
2018	1.0465384692910609
2019	1.0475420115725318
2020	1.0476351849570267
2021	1.0485521014632635
2022	1.04852251388268