Year % of total population 1960 42.69789720678274 1961 42.74003094489981 1962 42.79065788974283 1963 42.892103024583484 1964 43.03480383756462 1965 43.18063955441138 1966 43.35927998178877 1967 43.58045773242806 1968 43.79147597758604 1969 43.981399694619896 1970 44.16002220500951 1971 44.34204432515281 1972 44.52375040371843 1973 44.653581517308545 1974 44.73172286842388 1975 44.801218646668474 1976 44.87992246857101 1977 44.95254031887182 1978 44.98200058220797 1979 44.996663880412136 1980 45.032162083441854 1981 45.06340411953192 1982 45.045785607836244 1983 45.00055097882494 1984 44.96852799168064 1985 44.956122005885895 1986 44.95821406611397 1987 44.97015926991731 1988 45.00391467773187 1989 45.06464003957839 1990 45.134217226182564 1991 45.18843619839665 1992 45.24420077404904 1993 45.33801488306092 1994 45.33439465650045 1995 45.298634012930336 1996 45.389611271025466 1997 45.48472070430428 1998 45.49077350232825 1999 45.439976695802024 2000 45.36873718519057 2001 45.273103331963064 2002 45.17824859872581 2003 45.080020760905505 2004 44.961082807176034 2005 44.82534242424305 2006 44.663350539214825 2007 44.51763207633034 2008 44.39825795314929 2009 44.268993648616785 2010 44.12810501737645 2011 43.9628344548415 2012 43.82468958046183 2013 43.74954570497239 2014 43.66478664969889 2015 43.53417542297507 2016 43.34723540354469 2017 43.12423195020521 2018 42.87766644340441 2019 42.60166632562046 2020 42.32426235259805 2021 42.06291260951766 2022 41.79264338490448 2023 41.4944807512051