Year % of total population 1960 50.049743947802575 1961 50.070651934531725 1962 50.075417900749535 1963 50.06613983292447 1964 50.05818440354382 1965 50.05143321332686 1966 50.04079880592487 1967 50.03261470678244 1968 50.02273697553337 1969 50.01046408134544 1970 50.00449576607808 1971 49.99695240452962 1972 49.98382712637786 1973 49.97182814439872 1974 49.96232935324598 1975 49.95579073646425 1976 49.949829760046455 1977 49.94295643248802 1978 49.93588119724068 1979 49.93262547093135 1980 49.930025091465794 1981 49.92467649974751 1982 49.91801224384337 1983 49.91098332488848 1984 49.90485187971682 1985 49.896430253434204 1986 49.88432363623696 1987 49.86918779956195 1988 49.85315185078842 1989 49.83568738245907 1990 49.819375818556644 1991 49.80455075879683 1992 49.79056136283145 1993 49.780562352789886 1994 49.77257606039268 1995 49.765953904083844 1996 49.758879130980716 1997 49.75047498617737 1998 49.7427230082458 1999 49.73461127425325 2000 49.72319425512407 2001 49.71532872253806 2002 49.71231965936642 2003 49.71039517688834 2004 49.709365871517804 2005 49.70595867340142 2006 49.69516400205057 2007 49.677454851676096 2008 49.658062130188604 2009 49.641677203484356 2010 49.632915395183865 2011 49.628287531169164 2012 49.62237605862536 2013 49.6177105562797 2014 49.61521184757556 2015 49.612239780134296 2016 49.61343172288385 2017 49.62211310903909 2018 49.63421230273823 2019 49.65098028575305 2020 49.67644847963028 2021 49.704876844728844 2022 49.72525178964502 2023 49.74343470318999