Year	% of total population
1960	4.17586973459424
1961	4.21787013736769
1962	4.2402611475321
1963	4.28121592475968
1964	4.32916458652406
1965	4.38489247675159
1966	4.44679231519438
1967	4.51164021975998
1968	4.57745237233559
1969	4.64214099657301
1970	4.68456551063922
1971	4.73006468362603
1972	4.80798872037963
1973	4.89018720482902
1974	4.96185546677539
1975	5.02290755990545
1976	5.07449949595379
1977	5.11879866446448
1978	5.1542505321888
1979	5.17969206565062
1980	5.18812611510746
1981	5.17405680689356
1982	5.1428203690254
1983	5.0995481470403
1984	5.05019040308818
1985	5.00214785479325
1986	4.96120788564822
1987	4.93048824551643
1988	4.91220371851401
1989	4.9010191260645
1990	4.87048209708322
1991	4.8227698160691
1992	4.7803752876708
1993	4.74385384519169
1994	4.71237753793679
1995	4.68616114239459
1996	4.66714330165532
1997	4.6550184777321
1998	4.64410491261068
1999	4.63039363739277
2000	4.70255384058082
2001	4.86814262229643
2002	5.04890846119548
2003	5.24048665976517
2004	5.43113918899756
2005	5.61332312015868
2006	5.78280722572782
2007	5.93948279534209
2008	6.08482067189133
2009	6.21997042495939
2010	6.16332110223757
2011	5.93549267660181
2012	5.73273343023691
2013	5.55959921472756
2014	5.41939217251811
2015	5.30067045055291
2016	5.22587525486014
2017	5.21847796457765
2018	5.24867319150948
2019	5.30153952000804
2020	5.36840930935054
2021	5.44065994812263
2022	5.55079284396261
2023	5.73351127977791