Year % of total population 1960 52.4869974407661 1961 52.4311110650748 1962 52.3633124949037 1963 52.286430983507 1964 52.2037676199015 1965 52.1199135925237 1966 52.036008201237 1967 51.9590383405485 1968 51.8913523393175 1969 51.8311395741259 1970 51.780468401861 1971 51.7381840761541 1972 51.7073293587479 1973 51.6876596701725 1974 51.6741961230296 1975 51.6644873551893 1976 51.6592414802865 1977 51.6605285968912 1978 51.6674996812829 1979 51.6771704751695 1980 51.6836661436058 1981 51.6829790942989 1982 51.6724909991594 1983 51.6610864308728 1984 51.6547321999463 1985 51.6480771132497 1986 51.6405505102425 1987 51.6333530035905 1988 51.630267243314 1989 51.6306120698817 1990 51.6346797212061 1991 51.6691636450407 1992 51.7110047452015 1993 51.7141817998194 1994 51.6994554953225 1995 51.7013792099187 1996 51.7352900878152 1997 51.7889795607353 1998 51.8507351609423 1999 51.9226530829828 2000 52.0014580842549 2001 52.0437636004055 2002 52.0455431656698 2003 52.0410594693418 2004 52.0303599761441 2005 52.01498708372 2006 51.9942230552613 2007 51.9686612195758 2008 51.9414320257535 2009 51.9090031559995 2010 51.867886012303 2011 51.8228602968582 2012 51.7770243986338 2013 51.7288123477843 2014 51.6755244898893 2015 51.6179669386331 2016 51.5623435188296 2017 51.5042813694181 2018 51.4447714629424 2019 51.3893328219225 2020 51.3371308674991 2021 51.3107815380523 2022 51.2936567917788 2023 51.2633658940228