Year % of total population 1960 44.8010785810125 1961 44.9244676122716 1962 45.0387901421479 1963 45.1476987121836 1964 45.2450202355794 1965 45.3283677664618 1966 45.4036369427398 1967 45.4693355277304 1968 45.532718140505 1969 45.5921572918814 1970 45.5666372851239 1971 45.5386301153065 1972 45.5892646107435 1973 45.6472616111243 1974 45.7053173839543 1975 45.7628512016444 1976 45.8262609322033 1977 45.9009887020512 1978 45.9793894638568 1979 46.040247789713 1980 46.0936403991916 1981 46.1549048480147 1982 46.2188924325377 1983 46.2853089504522 1984 46.3544661597178 1985 46.427784544763 1986 46.5145243880375 1987 46.6154186461342 1988 46.7165285746136 1989 46.8016487248115 1990 46.8570677519294 1991 46.8849398959561 1992 46.8959658129067 1993 46.8923083680446 1994 46.8670864147393 1995 46.822419563459 1996 46.7792790655003 1997 46.7528383742022 1998 46.7417843056302 1999 46.7306392769721 2000 46.7027840181704 2001 46.656778964729 2002 46.6015149542823 2003 46.5328139912484 2004 46.4512719305526 2005 46.3646712665585 2006 46.2914211935371 2007 46.2524420373378 2008 46.235144716503 2009 46.2299537879181 2010 46.2396552857855 2011 46.2625036931203 2012 46.2931506999244 2013 46.3260835367172 2014 46.353735005292 2015 46.3739746213667 2016 46.3926766523769 2017 46.4126710035499 2018 46.4323826333445 2019 46.4498779715861 2020 46.4526938273947 2021 46.4447825266998 2022 46.4424724597213 2023 46.4453153203442