Year % of total population 1960 51.3517550410754 1961 51.3284204402211 1962 51.2833772094773 1963 51.2369584035719 1964 51.1873234463277 1965 51.1179513488094 1966 51.0737086477075 1967 51.0624597553123 1968 51.0270228053733 1969 50.962267010153 1970 50.932594644506 1971 50.9658246656761 1972 51.0102269892741 1973 51.0533141715447 1974 51.0788639183786 1975 51.0837588340716 1976 51.0762302139214 1977 51.0643821391485 1978 51.0659284714267 1979 51.0625682633796 1980 51.0642826734781 1981 51.1054346868669 1982 51.1522040320072 1983 51.1909622975364 1984 51.2209180465311 1985 51.2442326601619 1986 51.2602799543922 1987 51.290789412259 1988 51.3181532381209 1989 51.3351192533702 1990 51.3154042410808 1991 51.2675538863488 1992 51.2320779583849 1993 51.1939656856998 1994 51.1589657282742 1995 51.1188929046272 1996 51.0770642201835 1997 51.041779121235 1998 51.01143048955 1999 50.9775323818453 2000 50.9307916881333 2001 50.8778547424731 2002 50.8276466644894 2003 50.7740632712587 2004 50.7288376774373 2005 50.6934013344046 2006 50.6589017717332 2007 50.619867690616 2008 50.5716483870391 2009 50.5003070476466 2010 50.4293606082153 2011 50.3737801509851 2012 50.3138328583934 2013 50.2443626757241 2014 50.1733152038608 2015 50.1070705497586 2016 50.0317158261973 2017 49.9383377474072 2018 49.8389228481745 2019 49.7347900509288 2020 49.6243694386109 2021 49.4926168535584 2022 49.4048291283627 2023 49.3806075511226