Year % of total population 1960 51.3184638422436 1961 51.1601846698515 1962 51.0251001727969 1963 50.976956338519 1964 51.0203908391274 1965 51.0956323562351 1966 51.1783081542301 1967 51.2690675142963 1968 51.3687756542711 1969 51.4816900412654 1970 51.613885776824 1971 51.7726104969592 1972 51.9565350315625 1973 52.1592028977851 1974 52.3779275813786 1975 52.6144328016633 1976 52.8738358476573 1977 53.1550828497076 1978 53.4521098787743 1979 53.7668649629094 1980 54.0991657350383 1981 54.4390598283026 1982 54.7864027827241 1983 55.1414112050049 1984 55.495779165617 1985 55.8395727224008 1986 56.1657700828316 1987 56.4784810700337 1988 56.77663139761 1989 57.0569898068943 1990 57.3240923602879 1991 57.5770668162416 1992 57.8069925643807 1993 58.0186940803636 1994 58.2293808446012 1995 58.4496763338727 1996 58.6814396654874 1997 58.922774109778 1998 59.1730726677683 1999 59.4369010556358 2000 59.7221147543022 2001 60.033536203008 2002 60.3664664885342 2003 60.7110253977757 2004 61.057335121098 2005 61.4004352864919 2006 61.7396675715929 2007 62.0677701479224 2008 62.37908277256 2009 62.6752503566834 2010 62.9572512195217 2011 63.2249013763732 2012 63.4878279563337 2013 63.7559733789811 2014 64.0327788066595 2015 64.3231139580864 2016 64.6271636419046 2017 64.9388744431316 2018 65.3071963689473 2019 65.6629923631526 2020 65.9658726019369 2021 66.2602835405423 2022 66.4784761957669 2023 66.6373830404952