Year % of total population 1960 46.3284213425397 1961 46.4134631808058 1962 46.5014440495573 1963 46.5855692057337 1964 46.6624421403781 1965 46.7380221088976 1966 46.8105616202595 1967 46.8757684102263 1968 46.9392451184675 1969 47.0021738063261 1970 47.0524870044892 1971 47.0862833052017 1972 47.1074329715221 1973 47.1207335787667 1974 47.1288735915813 1975 47.1296834266201 1976 47.1226273682922 1977 47.1128810550084 1978 47.1004080212688 1979 47.0815126859123 1980 47.0618021212051 1981 47.0437305434471 1982 47.0260624297473 1983 47.0143994419593 1984 47.007755835401 1985 47.0033096895818 1986 47.0134718652878 1987 47.0320377384275 1988 47.0435817369588 1989 47.0444028644274 1990 47.0338605865477 1991 47.0098393931605 1992 46.9682080605057 1993 46.9096176668088 1994 46.8356082129058 1995 46.7620001457062 1996 46.6964730461024 1997 46.6387416587639 1998 46.5880054890043 1999 46.5321149693006 2000 46.4677966139363 2001 46.3950033453722 2002 46.319712816347 2003 46.2501819334664 2004 46.1860035277367 2005 46.1212918326277 2006 46.0564645921132 2007 45.9920462483705 2008 45.9477765944315 2009 45.9405957404529 2010 45.9574153581103 2011 45.9950938738589 2012 46.0506682083386 2013 46.1200407240103 2014 46.2016269511744 2015 46.2972266694559 2016 46.4002975110041 2017 46.5130747645854 2018 46.6337033678612 2019 46.7478483427826 2020 46.8465928935097 2021 46.9286250771984 2022 46.9684788122419 2023 46.982142121403