Year	male births per female births
1960	1.0343784736683284
1961	1.034382342652683
1962	1.034738784811819
1963	1.0347447293989696
1964	1.034803069443269
1965	1.035025708752422
1966	1.0352271681191867
1967	1.0354038982980218
1968	1.035546408834236
1969	1.0357467350945806
1970	1.0360246332710057
1971	1.0360194802226086
1972	1.0363192314867995
1973	1.0362689047489317
1974	1.0361804636935927
1975	1.0359645426936814
1976	1.035676596167152
1977	1.0354825408663526
1978	1.035360728590252
1979	1.0352388478709234
1980	1.035154329870823
1981	1.0351921095665026
1982	1.0350562232427867
1983	1.0351255193158855
1984	1.0352717253440276
1985	1.0353522655093832
1986	1.0356901848741498
1987	1.036050305396476
1988	1.036227379350929
1989	1.036544354439893
1990	1.036586129023887
1991	1.0365919474127865
1992	1.036702594137732
1993	1.0371030948018074
1994	1.0370997120325802
1995	1.0366803317601059
1996	1.0365722751236606
1997	1.0365002992680603
1998	1.0363923600795588
1999	1.0361766028283461
2000	1.0359909962773313
2001	1.0355200819449513
2002	1.0349860567464695
2003	1.0347433345626516
2004	1.0342827886475046
2005	1.0343015441723857
2006	1.0338513953035837
2007	1.0333233495792715
2008	1.0333796087618643
2009	1.0334688099987857
2010	1.033173388036956
2011	1.033046422930808
2012	1.032911951470646
2013	1.032693059608336
2014	1.0329777323615281
2015	1.0333103986924816
2016	1.0335212938794647
2017	1.0334527767622697
2018	1.0335523177951673
2019	1.033352614801432
2020	1.0334904335189021
2021	1.033489867479314
2022	1.0335599266468976