Year % of total population 1960 48.6244236106085 1961 48.6611786954252 1962 48.6953317328995 1963 48.7257888826663 1964 48.7522232974428 1965 48.7749640739963 1966 48.7835720063847 1967 48.7753595414144 1968 48.7632881650078 1969 48.7533026669767 1970 48.7441560140339 1971 48.734485419983 1972 48.7228125721065 1973 48.7106178458553 1974 48.7017333598664 1975 48.6928519107216 1976 48.6764926302942 1977 48.6858252570495 1978 48.7224790887907 1979 48.7532153260057 1980 48.7791400439607 1981 48.7993463285167 1982 48.8137847433609 1983 48.8240546386808 1984 48.8299752188256 1985 48.8313062923781 1986 48.8301136363133 1987 48.8291570595618 1988 48.8287978749856 1989 48.8274814332431 1990 48.8212154420908 1991 48.8076777295917 1992 48.7865973029297 1993 48.7585675973617 1994 48.7248625621532 1995 48.6831791796028 1996 48.6360099615178 1997 48.5866842892864 1998 48.534883559324 1999 48.4856736058934 2000 48.4414282270575 2001 48.396767716064 2002 48.3728243503185 2003 48.3788240201254 2004 48.3951035276618 2005 48.4136885447669 2006 48.4296369848185 2007 48.4395998308927 2008 48.4414570927706 2009 48.4349749671631 2010 48.425983875948 2011 48.4219633897346 2012 48.4203846846406 2013 48.4178193895452 2014 48.4165653289015 2015 48.4209070003188 2016 48.4292715056506 2017 48.429378096278 2018 48.4195648006101 2019 48.4060021682822 2020 48.37890451608 2021 48.3480352390452 2022 48.3715084595982 2023 48.3959582989072