Year % of total population 1960 51.5428435298624 1961 51.5142532330701 1962 51.4486723655345 1963 51.3758073422921 1964 51.3030039294257 1965 51.2337907329452 1966 51.171354790734 1967 51.1148996977016 1968 51.0630423289462 1969 51.0124828550885 1970 50.9604123515324 1971 50.993482855728 1972 51.128724354358 1973 51.279484003085 1974 51.4279240476074 1975 51.5777921558584 1976 51.7282889872124 1977 51.8739189217868 1978 52.0135891685913 1979 52.151309978427 1980 52.2907902390739 1981 52.2964538174645 1982 52.1421044126029 1983 51.9659178081566 1984 51.8071100956564 1985 51.6627368950123 1986 51.5127555372123 1987 51.3540567027209 1988 51.1960656712234 1989 51.0437345333711 1990 50.8993805679263 1991 50.7593298294051 1992 50.6194149659977 1993 50.4864521180306 1994 50.3588839606096 1995 50.2368807495493 1996 50.0831459155556 1997 49.8842458186596 1998 49.6807009165976 1999 49.4812754960317 2000 49.284309843943 2001 49.0713576421347 2002 48.8362493716096 2003 48.5946546968928 2004 48.3510695058038 2005 48.1080815364385 2006 47.8777604500765 2007 47.6702560153202 2008 47.4739234260767 2009 47.2756513937723 2010 47.0722493486799 2011 46.8846737252633 2012 46.7345169932237 2013 46.5952666823539 2014 46.4473204761089 2015 46.2972432639742 2016 46.2203972685585 2017 46.2130700196569 2018 46.1987113641482 2019 46.1822259563011 2020 46.1565842656365 2021 46.1213693419429 2022 46.0733235276641 2023 46.0101294661801