Year	% of total population
1960	0.6266115509291836
1961	0.6517629281981471
1962	0.7453117486776727
1963	0.9375720132998278
1964	1.1792115841890323
1965	1.4373133972852703
1966	1.704237571843486
1967	2.019918204239643
1968	2.394468725180875
1969	2.836709428084406
1970	3.361706222966001
1971	3.984655310927989
1972	4.72512456185117
1973	5.600484944083144
1974	6.640239426995014
1975	7.8731699676605995
1976	9.338001377455644
1977	10.500394909540017
1978	11.192331335376773
1979	11.929165009695842
1980	12.714127752549622
1981	13.54261523103564
1982	14.424162189082118
1983	15.363444920044
1984	16.367169416309142
1985	17.434180951917376
1986	18.576770194142522
1987	19.79636884606492
1988	20.7748575830064
1989	20.823052213765447
1990	20.86676799464813
1991	20.830014199279677
1992	20.60882121621754
1993	20.341706808566943
1994	20.21021159809277
1995	20.212020042506516
1996	20.368648757254565
1997	20.47536547842069
1998	20.50679454742421
1999	20.521626445130543
2000	20.5193463606534
2001	20.803541718640187
2002	21.269566641138347
2003	21.742702698203395
2004	22.22556697182322
2005	22.707777290894846
2006	23.189675288659167
2007	23.668023039738603
2008	24.11394918437181
2009	24.510385792399724
2010	24.8776634680144
2011	25.213797322493388
2012	25.528799572510536
2013	25.90383704443463
2014	26.351213866455176
2015	26.805297221138204
2016	27.26816374580751
2017	27.74148650906307
2018	28.225129673927906
2019	28.718438979079803
2020	29.22319901907347
2021	29.734598721466256
2022	30.2258654148453
2023	30.679855537407136