Year % of total population 1960 44.7107185526886 1961 44.8674548415172 1962 45.0283661627476 1963 45.1902970286554 1964 45.3458210171048 1965 45.4895506570198 1966 45.627976698862 1967 45.7590399578356 1968 45.8835577838195 1969 45.9960755127299 1970 46.0922978684706 1971 46.1804488713907 1972 46.2569083635535 1973 46.3205904558735 1974 46.3733383130597 1975 46.4115735009217 1976 46.44083979542 1977 46.4622918045982 1978 46.4770466577175 1979 46.4827769855789 1980 46.4870380799851 1981 46.4962715349949 1982 46.5018924067387 1983 46.5101880248687 1984 46.5204552945776 1985 46.5357624547638 1986 46.5754234355748 1987 46.6279750304972 1988 46.6725149707553 1989 46.7183307806127 1990 46.760390371601 1991 46.7852953497914 1992 46.8037564671011 1993 46.8142883477519 1994 46.7975956992553 1995 46.7589958645329 1996 46.7177229364864 1997 46.6778336232435 1998 46.640722740485 1999 46.6088969423909 2000 46.5833561075468 2001 46.5642650787764 2002 46.541730814844 2003 46.5126241347253 2004 46.48441875126 2005 46.4540541508982 2006 46.4241445309731 2007 46.4035466771477 2008 46.3844575904803 2009 46.3596164181179 2010 46.3267309100711 2011 46.2838651893931 2012 46.2516617667736 2013 46.2405598022193 2014 46.2347500794069 2015 46.2317262761544 2016 46.23074934256 2017 46.2236641671154 2018 46.2100438818785 2019 46.1826069149887 2020 46.1400660594951 2021 46.0944667179012 2022 46.0439137933964 2023 46.0117760788896