Year % of total population 1960 51.2180628344149 1961 51.2052860025721 1962 51.1893750713509 1963 51.1710004632999 1964 51.1513807149107 1965 51.130913317467 1966 51.1098271978798 1967 51.0890851644975 1968 51.0660397646279 1969 51.0401919649722 1970 51.0137492323179 1971 50.9850143567885 1972 50.9549582670138 1973 50.9249273917478 1974 50.8937614995985 1975 50.8636608387178 1976 50.8311216380946 1977 50.795424929269 1978 50.7604186878537 1979 50.7264191995969 1980 50.7286834377553 1981 50.7674226559479 1982 50.8102537215916 1983 50.857536267902 1984 50.9083175609116 1985 50.9632457181294 1986 51.0221702225473 1987 51.0838795849353 1988 51.1521342596401 1989 51.1531346589888 1990 51.0882788866854 1991 51.0301738822361 1992 50.9776335336796 1993 50.9307492773516 1994 50.8899871934367 1995 50.8570317248546 1996 50.8315909467663 1997 50.8106246298989 1998 50.7914332721729 1999 50.7747142407409 2000 50.7603851234764 2001 50.7463926297935 2002 50.7324799828388 2003 50.7202791854066 2004 50.7103833526426 2005 50.6995103131028 2006 50.6880157544496 2007 50.6766510895553 2008 50.6618029549715 2009 50.6435780107806 2010 50.6235988435773 2011 50.6023808711033 2012 50.5791874302258 2013 50.5557009367646 2014 50.5360972122945 2015 50.5198969691998 2016 50.5033175935293 2017 50.4880802723284 2018 50.4772577907644 2019 50.470559007018 2020 50.464975414523 2021 50.4604094543316 2022 50.4591363087157 2023 50.4602599714553