Year	male births per female births
1960	1.07
1961	1.07
1962	1.07
1963	1.07
1964	1.07
1965	1.07
1966	1.07
1967	1.07
1968	1.07
1969	1.07
1970	1.07
1971	1.07
1972	1.07
1973	1.07
1974	1.07
1975	1.07
1976	1.07
1977	1.07
1978	1.07
1979	1.07
1980	1.07
1981	1.07
1982	1.07
1983	1.07
1984	1.07
1985	1.07
1986	1.07
1987	1.071
1988	1.07
1989	1.07
1990	1.07
1991	1.07
1992	1.07
1993	1.07
1994	1.07
1995	1.07
1996	1.07
1997	1.07
1998	1.07
1999	1.07
2000	1.07
2001	1.07
2002	1.07
2003	1.07
2004	1.07
2005	1.07
2006	1.07
2007	1.07
2008	1.07
2009	1.07
2010	1.07
2011	1.07
2012	1.07
2013	1.071
2014	1.07
2015	1.07
2016	1.07
2017	1.07
2018	1.07
2019	1.07
2020	1.07
2021	1.07
2022	1.07