Year	male births per female births
1960	1.05
1961	1.05
1962	1.05
1963	1.05
1964	1.05
1965	1.05
1966	1.05
1967	1.05
1968	1.05
1969	1.05
1970	1.05
1971	1.05
1972	1.05
1973	1.05
1974	1.05
1975	1.05
1976	1.05
1977	1.05
1978	1.05
1979	1.05
1980	1.05
1981	1.05
1982	1.05
1983	1.05
1984	1.05
1985	1.05
1986	1.05
1987	1.05
1988	1.05
1989	1.05
1990	1.05
1991	1.05
1992	1.05
1993	1.05
1994	1.05
1995	1.05
1996	1.05
1997	1.05
1998	1.05
1999	1.05
2000	1.05
2001	1.05
2002	1.05
2003	1.05
2004	1.05
2005	1.05
2006	1.05
2007	1.05
2008	1.05
2009	1.05
2010	1.05
2011	1.05
2012	1.05
2013	1.05
2014	1.05
2015	1.05
2016	1.05
2017	1.05
2018	1.05
2019	1.05
2020	1.05
2021	1.05
2022	1.05