Year % of male population 1960 17.3487738224616 1961 17.5367459706832 1962 17.7177983080273 1963 17.8863600858091 1964 18.0344996179722 1965 18.1650437811856 1966 18.2775624846342 1967 18.3601738516913 1968 18.4142850292711 1969 18.4435858312415 1970 18.4570101663364 1971 18.4597284715324 1972 18.4468112237153 1973 18.4269048217533 1974 18.4211549735188 1975 18.4337110950786 1976 18.4560942263065 1977 18.4848183958539 1978 18.5080787300466 1979 18.5163289178338 1980 18.5066400077317 1981 18.4897825439737 1982 18.4856221837493 1983 18.5004892298529 1984 18.5190357795815 1985 18.532141167362 1986 18.526060743192 1987 18.5024050278175 1988 18.4730346384643 1989 18.4422747434727 1990 18.4187454525076 1991 18.3389463651781 1992 18.2680210453754 1993 18.0695710512316 1994 17.9259825187048 1995 17.5396889772543 1996 17.415765388681 1997 17.8078256474823 1998 18.0743119679964 1999 18.197916707317 2000 18.1473232345068 2001 17.7152519569116 2002 17.1834920940763 2003 16.7749321880825 2004 16.5503636070887 2005 16.6113108753153 2006 16.7551825780019 2007 16.8224959587671 2008 16.6520010892494 2009 16.4309436848004 2010 16.2056236171374 2011 15.9758798441297 2012 15.7976534816498 2013 15.6182267391161 2014 15.444540084218 2015 15.2480971607736 2016 14.9927770838241 2017 14.7124727303364 2018 14.4114195690423 2019 14.1414375659474 2020 13.924134009842 2021 13.759603323926 2022 13.6481143531399 2023 13.5643581745156