Year	% of total population
1960	7.67190065349084
1961	7.68264625786459
1962	7.68677091955927
1963	7.6862794647337
1964	7.69441123988077
1965	7.72075806530666
1966	7.7521290266767
1967	7.78881127790259
1968	7.84383372728688
1969	7.91837401643187
1970	7.98447760364014
1971	8.04389565948681
1972	8.13295394731247
1973	8.24209674603121
1974	8.34853337864196
1975	8.47173950214581
1976	8.62746617844563
1977	8.80444165421673
1978	8.99943222149584
1979	9.20168087004303
1980	9.39335253914085
1981	9.56022892927452
1982	9.70321216635608
1983	9.84458213065351
1984	10.0164242543539
1985	10.2334856573527
1986	10.466409744406
1987	10.6893838887281
1988	10.8848239183766
1989	11.0542399052488
1990	11.2252216235375
1991	11.389833590275
1992	11.5395036140662
1993	11.6741874650407
1994	11.7972404754898
1995	11.9212729441832
1996	12.0477113335275
1997	12.1772352158195
1998	12.3008380347504
1999	12.3990940394218
2000	12.4877618738198
2001	12.5780259097879
2002	12.6617620400584
2003	12.7566260640207
2004	12.8660069905151
2005	12.9947818339233
2006	13.1590157429329
2007	13.3542534561132
2008	13.5712118357518
2009	13.8025479434268
2010	14.0636633612715
2011	14.3951419217329
2012	14.7965322777203
2013	15.2139773305668
2014	15.6163867144073
2015	16.0090530297582
2016	16.3953223960481
2017	16.7776897125574
2018	17.158115075976
2019	17.5606626990206
2020	18.0184265996951
2021	18.5212836520665
2022	19.034311795393
2023	19.5457492693352