Year % of total population 1960 49.8407297996713 1961 49.803639968726 1962 49.7658342159604 1963 49.7268081875839 1964 49.6884752898325 1965 49.6508709064964 1966 49.6131845663706 1967 49.5771741200328 1968 49.5443974312996 1969 49.5122088406077 1970 49.4830651409035 1971 49.4568868411185 1972 49.4310623020452 1973 49.4050635863342 1974 49.3794831040354 1975 49.3560142474896 1976 49.3387974678474 1977 49.3166181343094 1978 49.2874696835266 1979 49.2612427260206 1980 49.2312012698102 1981 49.2033521789138 1982 49.1794886978284 1983 49.1509476565565 1984 49.1288099542575 1985 49.1209379671848 1986 49.1248667692558 1987 49.1466481547406 1988 49.1753720271282 1989 49.1909121075878 1990 49.1826026315561 1991 49.1631049151153 1992 49.1483655331554 1993 49.1505362748614 1994 49.1646681350019 1995 49.1954453889569 1996 49.2476354756276 1997 49.3041266368099 1998 49.3677596664907 1999 49.4392220536859 2000 49.5199413668845 2001 49.6074522307618 2002 49.7152791204925 2003 49.8485490817473 2004 49.9981598960005 2005 50.1667940518415 2006 50.3542916503057 2007 50.5549914453863 2008 50.7613885571454 2009 50.9723649450376 2010 51.1807253241317 2011 51.4051855545721 2012 51.658541857737 2013 51.9205830348203 2014 52.1559453597623 2015 52.3263634165842 2016 52.4088170546652 2017 52.4337566341296 2018 52.452699560721 2019 52.469574607762 2020 52.3642315533193 2021 52.1525910996671 2022 52.0543165776143 2023 52.0582595037187