Year	male births per female births
1960	1.0529414186662844
1961	1.0529746013516728
1962	1.0525881691617418
1963	1.052785705726133
1964	1.0525090305663019
1965	1.05280606388453
1966	1.0532155114281392
1967	1.0521020283669926
1968	1.0541894445701478
1969	1.0545813264085764
1970	1.0548187024550435
1971	1.0541700977496784
1972	1.054155773773588
1973	1.053662951669573
1974	1.0542062249007738
1975	1.054219186629386
1976	1.0538145645984525
1977	1.0540650104001974
1978	1.0537875179654201
1979	1.0537968343134732
1980	1.0533990509790707
1981	1.0537004757901083
1982	1.0532784356588696
1983	1.0536560608725505
1984	1.0528801819260165
1985	1.0532999706927588
1986	1.053717880136649
1987	1.0534992862258998
1988	1.0539186086914982
1989	1.0537362497916891
1990	1.054773752578796
1991	1.0533759945267072
1992	1.054776393908388
1993	1.0550916758906637
1994	1.0546401147918925
1995	1.05385808318772
1996	1.0533288288127454
1997	1.0522428731023497
1998	1.052582157616731
1999	1.0532447709993813
2000	1.053182438175987
2001	1.0516190229276858
2002	1.0521827496875258
2003	1.0518225283341334
2004	1.0517013805397402
2005	1.0511913804682314
2006	1.051123352753906
2007	1.0502954269155587
2008	1.050332366622612
2009	1.0505545463359112
2010	1.0506679161611745
2011	1.0504358503495252
2012	1.0501412961952439
2013	1.0503089793480798
2014	1.0502618638828465
2015	1.0502439488156012
2016	1.049539156218498
2017	1.0501238264277917
2018	1.049351762408911
2019	1.0495291648577876
2020	1.049549347062901
2021	1.0498582438829351
2022	1.0499080082003425