Year % of total population 1960 49.032323152971934 1961 49.09287379597744 1962 49.15650302177978 1963 49.21712468718468 1964 49.26824894567553 1965 49.31468830644875 1966 49.36128051385587 1967 49.40560379771879 1968 49.44479491670514 1969 49.481577461314735 1970 49.512180077994934 1971 49.540612539914854 1972 49.568817735869 1973 49.59386757938988 1974 49.60813543568977 1975 49.629337690959126 1976 49.674032084686836 1977 49.72553266336804 1978 49.780647724228075 1979 49.843562785150155 1980 49.90100598402744 1981 49.93590933266805 1982 49.95796754887584 1983 49.97716659931325 1984 49.99578920864466 1985 50.017260315406205 1986 50.03943367959101 1987 50.06076365896415 1988 50.081391041844014 1989 50.10609850381731 1990 50.13599550647467 1991 50.152947417216126 1992 50.150721258604364 1993 50.1496260658282 1994 50.156687311478876 1995 50.164439440597164 1996 50.1723601790885 1997 50.17468625156813 1998 50.177874882027304 1999 50.1901365625191 2000 50.208612809471774 2001 50.22998437854333 2002 50.25165127068166 2003 50.28762012190435 2004 50.35364514433254 2005 50.43384732527508 2006 50.51681465779831 2007 50.60102486224176 2008 50.68226448530285 2009 50.76243084532014 2010 50.80815708821693 2011 50.82439374672692 2012 50.86676899343647 2013 50.89721111389573 2014 50.892801329735875 2015 50.923863622066555 2016 50.99196860736782 2017 51.061897308014196 2018 51.10931693758231 2019 51.11204496128847 2020 51.07903769501185 2021 51.046531331555585 2022 51.025863950687565 2023 51.00171611781363