Year % of total population 1960 48.8034934497817 1961 49.1099354495242 1962 49.4065951466688 1963 49.681466235421 1964 49.8195049897323 1965 49.8484628820358 1966 49.8833620797896 1967 49.9118188081948 1968 49.9304951165265 1969 49.9528206315668 1970 50.0259589457877 1971 50.1087103857728 1972 50.1334700630613 1973 50.1288986014889 1974 50.1200908139376 1975 50.1161575383518 1976 50.1246991693192 1977 50.1420198162767 1978 50.1576626855676 1979 50.1663430951665 1980 50.1680431906754 1981 50.1008966642685 1982 49.9726501763741 1983 49.8520622522043 1984 49.737525190118 1985 49.6204281619127 1986 49.4968182325641 1987 49.3689802752545 1988 49.2566768540844 1989 49.1670213527287 1990 49.1597057769535 1991 49.1711886632519 1992 49.1383926829874 1993 49.1130050943213 1994 49.0851947468852 1995 49.0559298156593 1996 49.0242118760515 1997 48.9907180232839 1998 48.9578247167071 1999 48.9277863815757 2000 48.8837403927215 2001 48.8323129850194 2002 48.7871330111796 2003 48.7385151703152 2004 48.6882412435257 2005 48.6411887154834 2006 48.5910101399633 2007 48.5301929733327 2008 48.464008599898 2009 48.4039156978403 2010 48.3395486401337 2011 48.2743749173171 2012 48.2255451354627 2013 48.1802152210554 2014 48.1354608088279 2015 48.0915311295987 2016 48.0433157565105 2017 47.9903262994336 2018 47.9355869282867 2019 47.8886782332279 2020 47.8523683116385 2021 47.8119959010164 2022 47.7621077895723 2023 47.7101373408656