Year % of total population 1960 2.91407410736528 1961 2.89392432025403 1962 2.89228945346094 1963 2.90102193812021 1964 2.91596399447446 1965 2.93863368542522 1966 2.9661929328585 1967 2.99309874166292 1968 3.01772806923131 1969 3.03922388934983 1970 3.05808259770062 1971 3.1058848311209 1972 3.1829317042709 1973 3.25966336438649 1974 3.33428596296794 1975 3.40573590739517 1976 3.47270174782144 1977 3.53116695192396 1978 3.58049574186325 1979 3.62598213036284 1980 3.66061695525522 1981 3.68059987952266 1982 3.69974953430869 1983 3.72541269401736 1984 3.75889784267387 1985 3.80254136639534 1986 3.85651160323532 1987 3.91805639057944 1988 3.98138072667189 1989 4.04604740609869 1990 4.10801629673305 1991 4.16930051446946 1992 4.23654189412221 1993 4.30903801604799 1994 4.38681457282003 1995 4.47147450878462 1996 4.5654730653424 1997 4.66819496248965 1998 4.77670012798562 1999 4.88996760361078 2000 5.00430395103661 2001 5.1256899189217 2002 5.25480914375635 2003 5.3825236462275 2004 5.5054237730576 2005 5.62316289808707 2006 5.73813798692991 2007 5.84969721929979 2008 5.96096001304688 2009 6.07181783020162 2010 6.16936719482848 2011 6.28920740158773 2012 6.44426411095783 2013 6.60763168614953 2014 6.78540884972966 2015 6.98383411847619 2016 7.19867761825647 2017 7.42472006557024 2018 7.66820086478801 2019 7.88190672477085 2020 8.02123669897249 2021 8.1336389847111 2022 8.32313814034198 2023 8.58802409314041