Year % of total population 1960 51.24218853121998 1961 51.16005650195638 1962 51.068767558324176 1963 50.97577765255281 1964 50.90222591566898 1965 50.84677994550204 1966 50.79617143501766 1967 50.74915163922934 1968 50.70460411494311 1969 50.661616305525264 1970 50.6071961062692 1971 50.54647659083563 1972 50.51112030131532 1973 50.49622631115027 1974 50.4816587677941 1975 50.46728252815533 1976 50.45326073132025 1977 50.43904807682439 1978 50.42458034168631 1979 50.41106087352256 1980 50.39837100001185 1981 50.40083093996597 1982 50.4199162765403 1983 50.44232781278957 1984 50.46178071406567 1985 50.47616210914645 1986 50.49226298730988 1987 50.51130978281032 1988 50.52977131233847 1989 50.54646797233404 1990 50.551371906999066 1991 50.5436292194176 1992 50.533145641509705 1993 50.520980430273966 1994 50.50943614914815 1995 50.48780672998649 1996 50.45876962393735 1997 50.43227812173066 1998 50.40611475492901 1999 50.37941245719383 2000 50.35509659241479 2001 50.333723769927566 2002 50.31324949751342 2003 50.30532724325743 2004 50.32162464133935 2005 50.34855340180575 2006 50.37715959510428 2007 50.40636055660229 2008 50.43404587927714 2009 50.46059913090253 2010 50.48065963787604 2011 50.49552354136381 2012 50.51131467413089 2013 50.54451945328344 2014 50.59965918040355 2015 50.65424682994498 2016 50.70710836760212 2017 50.76298186299976 2018 50.72185202213396 2019 50.729361559474675 2020 50.81535710203994 2021 50.833509401732925 2022 50.84912666024161 2023 50.86339211134255