Year % of total population 1960 50.967763583686214 1961 50.907125775497114 1962 50.843544590743846 1963 50.782910277430545 1964 50.731693663947915 1965 50.68523313936957 1966 50.63871884485969 1967 50.59442843356563 1968 50.55521566239311 1969 50.51844324324268 1970 50.4877484814623 1971 50.4593669261715 1972 50.431152846386404 1973 50.40615197926638 1974 50.39187465946876 1975 50.37070027144394 1976 50.325995383446944 1977 50.274449102277394 1978 50.21930720944691 1979 50.15641103429836 1980 50.098968194095804 1981 50.0640991395393 1982 50.042032174155 1983 50.02281710493773 1984 50.00417002222422 1985 49.98274799754874 1986 49.96054268150009 1987 49.939243857620895 1988 49.918555494882796 1989 49.89387150573605 1990 49.8640413518514 1991 49.84699483259444 1992 49.84930010971248 1993 49.85039539352413 1994 49.843368627194586 1995 49.83550470264746 1996 49.827667448795026 1997 49.82525248399971 1998 49.8221119101141 1999 49.80985664206942 2000 49.79136728256386 2001 49.76999595640669 2002 49.74834245538525 2003 49.71239233153065 2004 49.646348816098836 2005 49.566164743997554 2006 49.4831496237339 2007 49.398981306662435 2008 49.31772356724618 2009 49.2375343652517 2010 49.19184291178306 2011 49.17561245019616 2012 49.133247537779276 2013 49.102761261198886 2014 49.10718249653955 2015 49.07611473843941 2016 49.00803130021358 2017 48.938076730366866 2018 48.89068298930524 2019 48.88793472546804 2020 48.920982976450574 2021 48.95345372603491 2022 48.97412157918898 2023 48.99828476675381