Year	male births per female births
1960	1.0472765237467199
1961	1.0473299140427266
1962	1.0475485412149184
1963	1.0475335214804369
1964	1.0479162254272858
1965	1.0482370291365566
1966	1.0485036356170843
1967	1.0488035567487082
1968	1.0491520369610483
1969	1.0498319113069514
1970	1.0506357445425454
1971	1.050617404913499
1972	1.05090858750194
1973	1.0512396820949939
1974	1.0514802713697458
1975	1.0514457784879294
1976	1.0514536264742296
1977	1.0525530734093849
1978	1.0521616923213395
1979	1.0490395468490556
1980	1.0490392597005607
1981	1.04949318665516
1982	1.0495505480826874
1983	1.049877864405258
1984	1.0505705055035024
1985	1.050676137982696
1986	1.051504832915431
1987	1.0527033624038602
1988	1.0558575132454389
1989	1.0575359813698642
1990	1.0583768739435502
1991	1.0577825560410086
1992	1.0568711489552083
1993	1.0594968874402584
1994	1.0602733377365698
1995	1.0585969082349571
1996	1.0583708911771834
1997	1.0573759077679885
1998	1.0572256632864407
1999	1.057075873404319
2000	1.057045939772589
2001	1.0573054433188158
2002	1.0556368129002627
2003	1.0545567920142607
2004	1.054426731000908
2005	1.0546141739941062
2006	1.0518461550678981
2007	1.0514882845928404
2008	1.050136407336649
2009	1.049148094179957
2010	1.047040643607672
2011	1.046072741912863
2012	1.0446615568847015
2013	1.0440476369822573
2014	1.0442020615743863
2015	1.0442539553088683
2016	1.0446759409095017
2017	1.0446889485596011
2018	1.0448339618213542
2019	1.0444154707723277
2020	1.044386002484428
2021	1.0443553142274415
2022	1.0443350820063542