Year % of total population 1960 49.88395276717422 1961 49.89893316684342 1962 49.912518421564776 1963 49.92437815959288 1964 49.93545961959485 1965 49.94656451175454 1966 49.956948172599645 1967 49.96655793042935 1968 49.97643432745068 1969 49.98639613498189 1970 49.99589067233107 1971 50.013715897664596 1972 50.038621603089936 1973 50.06209422265851 1974 50.0856527875203 1975 50.108441839850535 1976 50.13144230213699 1977 50.1516452846704 1978 50.16860715208619 1979 50.186601690150546 1980 50.203956124865414 1981 50.22142454541053 1982 50.2402933922108 1983 50.257822021156784 1984 50.27366457871131 1985 50.288283590445786 1986 50.30213511191038 1987 50.31630267880352 1988 50.330058938442605 1989 50.34381636942534 1990 50.35835462429993 1991 50.3740593778545 1992 50.39018265875965 1993 50.40541672234061 1994 50.41765951232356 1995 50.428469786807305 1996 50.44031914975052 1997 50.45230364426588 1998 50.46393500867212 1999 50.47548095591665 2000 50.48923611173281 2001 50.50246714068166 2002 50.51434448013159 2003 50.52591820365316 2004 50.536439688186256 2005 50.54659502837586 2006 50.556287658015926 2007 50.565754168623236 2008 50.57803066009818 2009 50.59272121772398 2010 50.605901541859154 2011 50.61686754167028 2012 50.6271226309268 2013 50.63726880546084 2014 50.64574743267802 2015 50.65381509148497 2016 50.6626087993241 2017 50.671596743756425 2018 50.68106614698395 2019 50.69188342786193 2020 50.711544236798936 2021 50.740723076640556 2022 50.763743642861705 2023 50.77687737320979