Year % of total population 1960 48.2635520350654 1961 48.273692431257 1962 48.2870678937536 1963 48.2983890505644 1964 48.3053147153972 1965 48.3094144018652 1966 48.3090971182314 1967 48.3056031957594 1968 48.3018758348829 1969 48.2956497823787 1970 48.284955001119 1971 48.2652592689141 1972 48.2435097312503 1973 48.2282817376252 1974 48.2146035570484 1975 48.202978628525 1976 48.197284719747 1977 48.2013059971628 1978 48.2108124111701 1979 48.2195217797654 1980 48.2287297207097 1981 48.2397748314261 1982 48.2537968136101 1983 48.276369837201 1984 48.3108270028434 1985 48.3512793970668 1986 48.3304645058048 1987 48.2392011984711 1988 48.1260198203473 1989 48.0808582200543 1990 48.1107858192567 1991 48.1331947572384 1992 48.1428401358718 1993 48.1298341189481 1994 48.086107302669 1995 48.0270438869284 1996 47.9510007496788 1997 47.8481877106769 1998 47.7312832011159 1999 47.6468307589248 2000 47.611056340427 2001 47.5822877460894 2002 47.5603011755097 2003 47.5453261369869 2004 47.5312562753984 2005 47.5188372079952 2006 47.5109380494463 2007 47.5173271050552 2008 47.5361400231914 2009 47.5643183006065 2010 47.603209004274 2011 47.6466323552022 2012 47.6866096812791 2013 47.7277176887087 2014 47.7735825075269 2015 47.8177534994151 2016 47.8704130800734 2017 47.9256627995239 2018 47.9744390188012 2019 48.0197243740595 2020 48.0528069533648 2021 48.0838112642093 2022 48.1240383672583 2023 48.1683826080694