Year	male births per female births
1960	1.0704237037691886
1961	1.0705298113989248
1962	1.070939401925854
1963	1.0705091875066473
1964	1.0700482842029144
1965	1.0701965863087934
1966	1.0702889291935813
1967	1.0704639362078547
1968	1.0704433029130604
1969	1.0704960180114136
1970	1.0710191684571655
1971	1.071510738435428
1972	1.0717055269505982
1973	1.0720890784980752
1974	1.0722643590151042
1975	1.0718367615860478
1976	1.0717355908335868
1977	1.071699042965559
1978	1.0715657886312524
1979	1.0711694852114295
1980	1.0709712859331901
1981	1.070906518076654
1982	1.0708226594524008
1983	1.0708008739530777
1984	1.0712918725956817
1985	1.0717347416006808
1986	1.0717616656261932
1987	1.0723876989678567
1988	1.071723013828219
1989	1.0717640676077964
1990	1.0717840746489824
1991	1.0713990224225767
1992	1.0714098229488447
1993	1.071412710535194
1994	1.0713633319557263
1995	1.0712136759828281
1996	1.070850536707857
1997	1.0712405930499307
1998	1.0713867606646306
1999	1.071414167612523
2000	1.0717888401910516
2001	1.0717287999501282
2002	1.0716758223097886
2003	1.0715918787274368
2004	1.0716231580714597
2005	1.0712764309432912
2006	1.0712524460214072
2007	1.071245540044048
2008	1.071534234992867
2009	1.0716177888985894
2010	1.0712974436800482
2011	1.0716065831468544
2012	1.0716052523418254
2013	1.072188856031251
2014	1.0718596067480235
2015	1.0721408137635509
2016	1.0724112495622529
2017	1.0720958273383172
2018	1.0719861922360976
2019	1.0716829379258912
2020	1.0716746637961583
2021	1.0716719334125777
2022	1.0713369238316968