Year % of total population 1960 50.346687411850105 1961 50.399512515192924 1962 50.45848545199123 1963 50.51411581975999 1964 50.56748926058767 1965 50.64258513535116 1966 50.752237308198346 1967 50.869026686559636 1968 50.95279637663476 1969 50.99004684226863 1970 50.98338360244434 1971 50.95706410440693 1972 50.948192722461 1973 50.95911064851775 1974 50.97967552198114 1975 51.00406184959349 1976 51.03020451217709 1977 51.058350209923944 1978 51.088664221504985 1979 51.111766231928144 1980 51.124481161527 1981 51.128046581830795 1982 51.12440728520797 1983 51.11490636145891 1984 51.10084161309919 1985 51.084211797542515 1986 51.06458596221662 1987 51.04639962873044 1988 51.0290229023295 1989 51.00714129629931 1990 50.982329554420204 1991 50.95515857841529 1992 50.92897550753336 1993 50.90887839999413 1994 50.89073416831772 1995 50.87127060585904 1996 50.850989332254805 1997 50.829482733646785 1998 50.80438646264125 1999 50.77256837456495 2000 50.74162134439913 2001 50.723470635303975 2002 50.72182547508627 2003 50.724348648569915 2004 50.71887556629038 2005 50.71077801022155 2006 50.705716838594746 2007 50.705668451708696 2008 50.70840151386212 2009 50.711834085720746 2010 50.71504157170062 2011 50.69421036302931 2012 50.651177385016325 2013 50.61037172949829 2014 50.57336205600592 2015 50.54048568254282 2016 50.508436343883716 2017 50.47714806380341 2018 50.44927771765081 2019 50.42520877014608 2020 50.42385234410596 2021 50.44638219686584 2022 50.46789036954989 2023 50.4794678628866