Year % of total population 1960 1.721985103349287 1961 1.7715766095676198 1962 1.8826482027934002 1963 2.000917883879249 1964 2.1274247146142193 1965 2.2620759030757505 1966 2.4065905034938955 1967 2.560022715266568 1968 2.724335084514804 1969 2.9024802560946084 1970 3.1048034507785247 1971 3.364824113371371 1972 3.6412112154427523 1973 3.8950159377735702 1974 4.1379105474685485 1975 4.3344418288831195 1976 4.548047082433011 1977 4.769289092237932 1978 4.997810831602767 1979 5.238698404997569 1980 5.487316686755885 1981 5.719942406947418 1982 5.919215302847476 1983 6.125011502493292 1984 6.344483114894429 1985 6.580891302449599 1986 6.840046375079161 1987 7.12123571463486 1988 7.420936412823 1989 7.736286365562902 1990 8.066926264207137 1991 8.378872704821994 1992 8.59567746819414 1993 8.810924457583326 1994 9.031575353039948 1995 9.262584103016081 1996 9.51095669266234 1997 9.761554043287688 1998 10.010618295124914 1999 10.262153809625422 2000 10.521768666890976 2001 10.729722084108083 2002 10.872357922992983 2003 11.02967134705979 2004 11.1998024349425 2005 11.388356427200721 2006 11.616750893793695 2007 11.869149854053743 2008 12.147907365273639 2009 12.43360277549488 2010 12.693882617883268 2011 12.950125724809578 2012 13.208833765973344 2013 13.470083280259844 2014 13.739971478437097 2015 14.023526579230818 2016 14.307817886393135 2017 14.595685411354406 2018 14.903089036984307 2019 15.223997198292746 2020 15.545058037569026 2021 15.868230928186996 2022 16.19927957816642 2023 16.52995783239157