Year	% of total population
1960	28.092478334493567
1961	28.14541674102817
1962	28.017264703700288
1963	27.82743650179019
1964	27.671192359663877
1965	27.564053282583664
1966	27.38402954568754
1967	27.159367970972035
1968	26.97241136515476
1969	26.75962997323602
1970	26.523618811979365
1971	26.267715395462755
1972	25.987950920855248
1973	25.667764532771514
1974	25.31781333154745
1975	24.93539340029409
1976	24.51867616536183
1977	24.091369278301865
1978	23.655554430201143
1979	23.227278972224052
1980	22.834299607687704
1981	22.497554072631253
1982	22.184800755588213
1983	21.86416682035142
1984	21.54512678026216
1985	21.221608557995307
1986	20.898392222312843
1987	20.604037894025964
1988	20.356744147540436
1989	20.139229858607024
1990	19.952808461132808
1991	19.786804652240917
1992	19.64117527871743
1993	19.506674095550963
1994	19.34330073761374
1995	19.150405995098133
1996	18.953569319668002
1997	18.770902706502994
1998	18.594728080342975
1999	18.422507957190696
2000	18.248746856210687
2001	18.06166736483654
2002	17.870793832795574
2003	17.682675905969447
2004	17.490293094099894
2005	17.29580936641926
2006	17.117767800610437
2007	16.969585457074515
2008	16.855355850041374
2009	16.761199382784845
2010	16.672216075789912
2011	16.59366276367085
2012	16.52011460894894
2013	16.450814888730683
2014	16.37955648760268
2015	16.302924403264306
2016	16.231656647858966
2017	16.165153613584135
2018	16.076146475422224
2019	15.96147214708977
2020	15.829265753978989
2021	15.6709878981251
2022	15.503794488773668
2023	15.309008032057468