Year % of total population 1960 2.27874139520754 1961 2.30491003514507 1962 2.33162083699924 1963 2.3576888312776 1964 2.38452736659769 1965 2.41339448233528 1966 2.4451623440354 1967 2.48002968996159 1968 2.51836153024175 1969 2.55838654252125 1970 2.60316290613836 1971 2.65410164958884 1972 2.70701165676605 1973 2.76030108804936 1974 2.81417090359497 1975 2.86910592410499 1976 2.92483959018028 1977 2.98131075347738 1978 3.03899158965776 1979 3.09785828179534 1980 3.15727480267094 1981 3.22069486978118 1982 3.28913885556331 1983 3.36136622115507 1984 3.43665393173202 1985 3.51274453334614 1986 3.59060586713252 1987 3.66908820284653 1988 3.7472108855116 1989 3.82566438356253 1990 3.90434376632705 1991 3.98525408623814 1992 4.06743608433252 1993 4.14990482757969 1994 4.23237173911004 1995 4.31617441227689 1996 4.40112367870962 1997 4.49006515924147 1998 4.58233191805978 1999 4.66869191313149 2000 4.75159407474174 2001 4.82291281948142 2002 4.89715961260559 2003 4.97940067050969 2004 5.0614107401908 2005 5.15383256406005 2006 5.2525395605699 2007 5.35987383877569 2008 5.47071001677428 2009 5.5842701882701 2010 5.7097622979359 2011 5.84504298316489 2012 5.98757208328105 2013 6.13435947822479 2014 6.28547925690101 2015 6.44635049995224 2016 6.62420479753672 2017 6.86215113887646 2018 7.21271730769343 2019 7.62256014566775 2020 7.99434273659421 2021 8.33813699082583 2022 8.60852135166248 2023 8.81429543195019