Year	% of total population
1960	33.776503946000794
1961	34.49631400956142
1962	35.220229251724305
1963	35.95089325286553
1964	36.689600287095935
1965	37.46041531505247
1966	38.18235456083412
1967	38.821703646745895
1968	39.4819474826533
1969	40.143742841802485
1970	40.807044349912736
1971	41.445325785233116
1972	42.09472508164961
1973	42.745659185517425
1974	43.37749392898813
1975	44.001998074784424
1976	44.6640320448127
1977	45.27743807583296
1978	45.76950152411646
1979	46.24979987608905
1980	46.793072071298866
1981	47.347463335940866
1982	47.89081078756795
1983	48.42163564930105
1984	48.956072077689875
1985	49.46134836310188
1986	49.97110164572158
1987	50.423176602750026
1988	50.7851082227253
1989	51.12350696010651
1990	51.457779837696094
1991	51.794601189838325
1992	52.199199950551716
1993	52.61975870152361
1994	53.02857989983372
1995	53.37628891090301
1996	53.704137615425914
1997	54.03679188848388
1998	54.393678621993544
1999	54.75663263204323
2000	55.12147100404749
2001	55.484478669267496
2002	55.82800068570284
2003	56.16530239674077
2004	56.51606967059213
2005	56.901412349822486
2006	57.281170861597616
2007	57.61557574039377
2008	57.948235716979504
2009	58.2940257442493
2010	58.63331025182258
2011	58.85291658491264
2012	59.07207739755114
2013	59.39586700172802
2014	59.77709928370429
2015	60.185203004001046
2016	60.516808500414186
2017	60.82028707296068
2018	61.12194590502151
2019	61.417445402604244
2020	61.71734442900722
2021	62.02650424878021
2022	62.33118366870368
2023	62.62799103344683
