Year % of total population 1960 51.42608980117059 1961 51.41383082060115 1962 51.40260409831379 1963 51.39068214687263 1964 51.379044735629016 1965 51.37520308480428 1966 51.38398113888312 1967 51.397179647514754 1968 51.402526088641736 1969 51.397730776940136 1970 51.3846599413781 1971 51.36248082126221 1972 51.342763625512994 1973 51.32998938129406 1974 51.319937316736365 1975 51.31417653182309 1976 51.31334275862373 1977 51.314928585017846 1978 51.31908391291221 1979 51.32109955036329 1980 51.31658744506887 1981 51.30992444995194 1982 51.30528931262738 1983 51.299416900492126 1984 51.29300569418315 1985 51.28544237421257 1986 51.274553519688006 1987 51.26255436357788 1988 51.25016781751135 1989 51.235544281868506 1990 51.21982680347315 1991 51.20408481829429 1992 51.1901120352969 1993 51.17931251625932 1994 51.16961637179638 1995 51.160795909219026 1996 51.153240667686724 1997 51.14668629287107 1998 51.14005373033021 1999 51.13183096324396 2000 51.124077283440556 2001 51.121702524694335 2002 51.123363269319285 2003 51.12379196558667 2004 51.12094729508804 2005 51.11655171533366 2006 51.111277834962515 2007 51.104684727784765 2008 51.097268555060694 2009 51.092122483795514 2010 51.08835634236908 2011 51.07437289209699 2012 51.049653695191246 2013 51.02570118201966 2014 51.00301675626225 2015 50.98018599337987 2016 50.958851262721566 2017 50.940777068980275 2018 50.92460649312378 2019 50.911595873546375 2020 50.90708767177442 2021 50.91362946497676 2022 50.91478895512476 2023 50.92193136122794