Year % of total population 1960 50.598013487898 1961 50.5894651664792 1962 50.5803149723788 1963 50.5700889645054 1964 50.5589244099721 1965 50.5472993033094 1966 50.5345836865018 1967 50.5213477303648 1968 50.5074529542232 1969 50.4933171540807 1970 50.4799850630467 1971 50.467359219107 1972 50.4558154134471 1973 50.4452150707795 1974 50.4352466501883 1975 50.42538575007 1976 50.3725711702595 1977 50.2762966429381 1978 50.1782999437437 1979 50.0792568721712 1980 49.9803335105388 1981 49.881934117435 1982 49.7851181394331 1983 49.6908937808831 1984 49.5988964699561 1985 49.5092780274767 1986 49.4219956332774 1987 49.3380471128164 1988 49.2800599119009 1989 49.2874918000711 1990 49.3336052948486 1991 49.3765467286301 1992 49.4152374197245 1993 49.4505924938478 1994 49.4857339317733 1995 49.5327319570325 1996 49.581962022494 1997 49.6213067504956 1998 49.6557024008569 1999 49.6824662960693 2000 49.702194899406 2001 49.7355760665194 2002 49.7665270459222 2003 49.7770833266076 2004 49.7855235960495 2005 49.7929830447103 2006 49.8013204320466 2007 49.8103218118604 2008 49.8192952997974 2009 49.8289641453465 2010 49.83951947472 2011 49.8482255577003 2012 49.8554460996215 2013 49.8688163570594 2014 49.8930134489638 2015 49.9138573740391 2016 49.9268684633528 2017 49.9446138993396 2018 49.9633742772014 2019 49.9771563450459 2020 49.9893318759802 2021 50.0054607218341 2022 50.0218492299177 2023 50.0318251436921