Year % of total population 1960 2.62851264592551 1961 2.66711572188393 1962 2.71588046157888 1963 2.76872506234863 1964 2.82311952594268 1965 2.88004676228738 1966 2.94018116934811 1967 3.00111153543743 1968 3.06191750693651 1969 3.12263308805099 1970 3.18251632058255 1971 3.24193514289005 1972 3.30167204371851 1973 3.36261513124767 1974 3.42593626599328 1975 3.49133902447472 1976 3.55676909593292 1977 3.61997685340847 1978 3.68071465033775 1979 3.73988769030688 1980 3.79635449017408 1981 3.84954837459951 1982 3.90090876792349 1983 3.95229305642646 1984 4.00591050295292 1985 4.06347328646887 1986 4.12746242024907 1987 4.20046284009924 1988 4.28277750350148 1989 4.37278198946374 1990 4.46555252188748 1991 4.56008127930735 1992 4.6598849969262 1993 4.76405189001891 1994 4.86981986237436 1995 4.97455842480577 1996 5.07958393461077 1997 5.18643654070322 1998 5.29312114182825 1999 5.3989447730452 2000 5.50378307089821 2001 5.61417393486191 2002 5.73284436786712 2003 5.85864961914814 2004 5.99309255149371 2005 6.13568447967165 2006 6.28477869813011 2007 6.43749069360601 2008 6.59299747768124 2009 6.75032823580953 2010 6.90788376709898 2011 7.06724659127346 2012 7.23787553789152 2013 7.43098016784674 2014 7.657442869735 2015 7.90624441594974 2016 8.16185098279568 2017 8.42812804069505 2018 8.70559458682759 2019 8.99540920394896 2020 9.29075512793776 2021 9.58106488910599 2022 9.87670916943628 2023 10.2123654031708