Year % of total population 1960 42.604053938659774 1961 42.70668854883996 1962 42.834313581518416 1963 43.0063309283505 1964 43.22136062250854 1965 43.433247833603446 1966 43.621797164247766 1967 43.8002413854558 1968 43.96427630152092 1969 44.12237906306191 1970 44.28373662916077 1971 44.45376358812267 1972 44.639533005297636 1973 44.81864003878019 1974 44.97379395113205 1975 45.122485312082894 1976 45.26101939183101 1977 45.373759439324395 1978 45.460862194072305 1979 45.54675634366377 1980 45.6421764739433 1981 45.74011895694722 1982 45.82999598833522 1983 45.915122590919424 1984 45.99803561662713 1985 46.06573325238852 1986 46.114275972208794 1987 46.13116031800206 1988 46.10392786975433 1989 46.0647475297513 1990 46.025724490519394 1991 45.966951678294265 1992 45.90225417722427 1993 45.85701362188677 1994 45.742415780023414 1995 45.62201523086192 1996 45.59681155337273 1997 45.58328101760689 1998 45.528325315872785 1999 45.45348259504334 2000 45.39117883182497 2001 45.33793439169951 2002 45.29950972209609 2003 45.26128926568874 2004 45.210308041633574 2005 45.153913939202695 2006 45.110705140241535 2007 45.10200084800479 2008 45.07945815844807 2009 45.03001725813244 2010 44.98482516096607 2011 44.92321816882309 2012 44.85658914833139 2013 44.78430623269958 2014 44.683765969411574 2015 44.5642058814798 2016 44.41887019870324 2017 44.241099187867746 2018 44.03801023502735 2019 43.80951183300651 2020 43.562582471813265 2021 43.31372250216388 2022 43.056506454657395 2023 42.773860449493945