Year	male births per female births
1960	1.031
1961	1.031
1962	1.031
1963	1.031
1964	1.031
1965	1.031
1966	1.031
1967	1.031
1968	1.031
1969	1.032
1970	1.032
1971	1.032
1972	1.032
1973	1.032
1974	1.031
1975	1.032
1976	1.032
1977	1.032
1978	1.032
1979	1.031
1980	1.032
1981	1.032
1982	1.031
1983	1.032
1984	1.031
1985	1.032
1986	1.031
1987	1.031
1988	1.031
1989	1.031
1990	1.031
1991	1.031
1992	1.031
1993	1.031
1994	1.031
1995	1.031
1996	1.031
1997	1.031
1998	1.031
1999	1.031
2000	1.031
2001	1.032
2002	1.032
2003	1.031
2004	1.031
2005	1.031
2006	1.031
2007	1.031
2008	1.031
2009	1.031
2010	1.032
2011	1.032
2012	1.032
2013	1.032
2014	1.033
2015	1.032
2016	1.032
2017	1.032
2018	1.032
2019	1.032
2020	1.032
2021	1.032
2022	1.032