Year % of total population 1960 49.5334037722822 1961 49.5599434658481 1962 49.5847698553933 1963 49.5966704592564 1964 49.607585395448 1965 49.6303713368239 1966 49.654284918704 1967 49.6783032691442 1968 49.7022127192443 1969 49.7257588186387 1970 49.7486504736335 1971 49.7704464533199 1972 49.7908515349362 1973 49.8114560355198 1974 49.831899687418 1975 49.8504790781433 1976 49.8645391653169 1977 49.8719490421997 1978 49.8738610466211 1979 49.8710974003887 1980 49.8659750907665 1981 49.8611531200305 1982 49.8574006262272 1983 49.8530223934344 1984 49.8469553450385 1985 49.8392947415184 1986 49.8302349532242 1987 49.8179808305704 1988 49.8053846900514 1989 49.7967648720088 1990 49.782526193442 1991 49.7579846108858 1992 49.7258269593826 1993 49.6852647904928 1994 49.1416697548445 1995 48.3769444039517 1996 48.405914070562 1997 48.4323046638385 1998 48.3805148556884 1999 48.2573321196211 2000 48.1416435953242 2001 48.0283722852584 2002 47.9515798873094 2003 47.9741227582846 2004 48.0537720546511 2005 48.1262475351193 2006 48.19112398984 2007 48.2500361224332 2008 48.3035977524423 2009 48.3523314081203 2010 48.3966921818355 2011 48.436134410243 2012 48.4831463679994 2013 48.5411233768866 2014 48.595468283234 2015 48.6455118496939 2016 48.6925084186866 2017 48.7356809978857 2018 48.778428459804 2019 48.820244100753 2020 48.8587260871106 2021 48.8953629684038 2022 48.9307307164605 2023 48.963577258176