Year % of total population 1960 52.0281036643795 1961 51.996469652059154 1962 51.9634768946974 1963 51.92928881468987 1964 51.895660659659875 1965 51.86289957599108 1966 51.83210408639839 1967 51.80337416255307 1968 51.77815483359656 1969 51.758491781419366 1970 51.73958666981352 1971 51.71773904759867 1972 51.69826970919691 1973 51.68305804854227 1974 51.667764071573096 1975 51.65534784695268 1976 51.64725828009089 1977 51.63965773366142 1978 51.633675897412665 1979 51.6293120576392 1980 51.612134701997306 1981 51.59300512154591 1982 51.58480560077213 1983 51.57578858813881 1984 51.56641901520435 1985 51.55617900895712 1986 51.542509082409566 1987 51.52648560259239 1988 51.510062761625626 1989 51.49230566242804 1990 51.47235362903717 1991 51.45092773742174 1992 51.43028155664575 1993 51.410994942194534 1994 51.39470820373242 1995 51.382890346665064 1996 51.3746014748856 1997 51.368746077048 1998 51.36524584048146 1999 51.36371714668384 2000 51.36262677476112 2001 51.36103744048485 2002 51.353018285405334 2003 51.33773564238612 2004 51.318811853119875 2005 51.29809370705389 2006 51.28076099545395 2007 51.26436072988189 2008 51.24889517093062 2009 51.2395285897177 2010 51.233796650676084 2011 51.227991329454504 2012 51.21848161031741 2013 51.208234523596545 2014 51.197658144320684 2015 51.17932433366919 2016 51.15821622546995 2017 51.14049319589725 2018 51.124890642741995 2019 51.11420910205758 2020 51.10736366200763 2021 51.10255275956374 2022 51.09664306901552 2023 51.0886325217458