Year	% of total population
1960	14.56381043091207
1961	14.811409977057558
1962	15.069248988944002
1963	15.347975595532903
1964	15.640194794809105
1965	15.941282483984773
1966	16.255176737142698
1967	16.57431036472093
1968	16.89960821916804
1969	17.234518108821828
1970	17.551966796286038
1971	17.875321025984288
1972	18.220534902479145
1973	18.56234198719706
1974	18.87889878163507
1975	19.20120519944712
1976	19.524124723782222
1977	19.8604375818888
1978	20.21509624772084
1979	20.555022113190702
1980	20.876112347801225
1981	21.165690061507384
1982	21.445105837163144
1983	21.787106828213634
1984	22.192535697855114
1985	22.645105202412726
1986	23.148128021037987
1987	23.659649228669558
1988	24.173549354100377
1989	24.68285012061773
1990	25.202798527967268
1991	25.645146046721578
1992	26.07387389696001
1993	26.50982315190779
1994	26.948708857195015
1995	27.335288190990923
1996	27.624897334237883
1997	27.91107222374094
1998	28.203375305468263
1999	28.489867849737994
2000	28.772779935088142
2001	29.071590808357595
2002	29.38619028263534
2003	29.698419347200563
2004	30.014148102132815
2005	30.349868510115996
2006	30.676065509793645
2007	30.934766393636306
2008	31.343241302832944
2009	31.757526198818244
2010	32.18129098740077
2011	32.61769197014576
2012	33.04047359953716
2013	33.47621168031679
2014	33.93696262717749
2015	34.425583691313314
2016	34.894752566011874
2017	35.358900675063325
2018	35.84759777894742
2019	36.33625936676088
2020	36.82830236936002
2021	37.32369883917528
2022	37.82515807849404
2023	38.33533732457203