Year % of total population 1960 50.1013693639107 1961 50.0948740165943 1962 50.0883927552889 1963 50.082085112521 1964 50.074696206608 1965 50.0685555701111 1966 50.0639964010097 1967 50.0613372873366 1968 50.060709700047 1969 50.0652530489313 1970 50.0765848059631 1971 50.0964041923655 1972 50.1230272160297 1973 50.154561656033 1974 50.1915013436828 1975 50.2306305815567 1976 50.2721172984827 1977 50.3168086306487 1978 50.3628718151585 1979 50.4075502110467 1980 50.4466621581968 1981 50.4794283728931 1982 50.508271285355 1983 50.533859111559 1984 50.5555774558043 1985 50.5722407371805 1986 50.5856838335617 1987 50.597642046202 1988 50.6038931585542 1989 50.6039636533034 1990 50.6018665936082 1991 50.5995517194154 1992 50.597029815728 1993 50.5932407851528 1994 50.5915313419217 1995 50.5923163063613 1996 50.5922034663048 1997 50.5900689485731 1998 50.585690899146 1999 50.5754064131987 2000 50.5576739961693 2001 50.5332397860432 2002 50.503248259133 2003 50.4734583673771 2004 50.4434399572736 2005 50.4121197498204 2006 50.3782269392389 2007 50.3369716656162 2008 50.2915669070721 2009 50.2456669755445 2010 50.1981031428216 2011 50.1491541278333 2012 50.0968869045134 2013 50.0417973719786 2014 49.9872890589061 2015 49.9320005819674 2016 49.875935831241 2017 49.8197985919932 2018 49.7652401061256 2019 49.7136226784738 2020 49.6666737069037 2021 49.6277334584747 2022 49.6024256288091 2023 49.5870180471587