Year	male births per female births
1960	1.0426333172064322
1961	1.0426049649508375
1962	1.0428308124762256
1963	1.0427712971603225
1964	1.043077996344733
1965	1.0432141460029243
1966	1.0433474470228867
1967	1.0430486662948677
1968	1.0432175331009792
1969	1.0430356501567215
1970	1.0429381189254125
1971	1.0427291916219676
1972	1.0425891555940445
1973	1.0427430069968475
1974	1.0426138241725862
1975	1.0429231246857902
1976	1.0433042984573377
1977	1.0434580330164707
1978	1.0437091590868317
1979	1.0433602737154335
1980	1.043307912354362
1981	1.0432125814833924
1982	1.0432749223676798
1983	1.0439093744364798
1984	1.0441047424150653
1985	1.0440063933587842
1986	1.0442149436834507
1987	1.044459997662381
1988	1.0446325535089132
1989	1.0451476541450555
1990	1.0454340688822559
1991	1.0455616963657812
1992	1.0454313531765254
1993	1.0454489327374934
1994	1.0450788207536212
1995	1.0453325365511772
1996	1.0454185991337772
1997	1.0452368956812568
1998	1.0452545717594695
1999	1.0452221153257677
2000	1.045153695823099
2001	1.045311194153848
2002	1.04530258394117
2003	1.0453694466839776
2004	1.04524910780088
2005	1.0451570305292603
2006	1.0454649995955636
2007	1.0452984769939286
2008	1.0449418199076335
2009	1.0450535226673823
2010	1.045146800950805
2011	1.0452642796172085
2012	1.0451704441447398
2013	1.0450468211909671
2014	1.0450633689313824
2015	1.0449103187733424
2016	1.044755727750365
2017	1.0445774943108126
2018	1.0445074549951443
2019	1.0443720059112271
2020	1.0442169554241734
2021	1.0442134512830785
2022	1.0440404798457528