Year	% of total population
1960	64.35676247804028
1961	63.97595663784958
1962	63.578258364352315
1963	63.16958452480117
1964	62.74738609683348
1965	62.33365830524327
1966	61.92468543641222
1967	61.54597574167837
1968	61.14992079374317
1969	60.74879572967062
1970	60.35140986328984
1971	59.92500775694671
1972	59.44935309625769
1973	58.98506599827568
1974	58.44575059657352
1975	57.89627163630392
1976	57.34713533015458
1977	56.83313725495041
1978	56.330797466545654
1979	55.86208016068478
1980	55.42292555636806
1981	55.04426077506665
1982	54.639089581262894
1983	54.32757064897559
1984	54.01576274632022
1985	53.68045235781869
1986	53.321106626729424
1987	52.93175768913815
1988	52.545433637006795
1989	52.15911937917144
1990	51.77187990452863
1991	51.4874132650525
1992	51.327206803424005
1993	51.1906471800223
1994	50.99401533669985
1995	50.80728684641837
1996	50.625284176651824
1997	50.43118513501485
1998	50.25579081851563
1999	50.06431770839756
2000	49.86252139071908
2001	49.664182833648084
2002	49.49304658538318
2003	49.30949302302746
2004	49.0885342041135
2005	48.84740496385244
2006	48.61605076917275
2007	48.386962885582726
2008	48.131320064035364
2009	47.88194697884968
2010	47.71529740414712
2011	47.62921065616311
2012	47.499874953126195
2013	47.30820084337446
2014	47.082378013286764
2015	46.84289046099864
2016	46.602789673148116
2017	46.34546384041152
2018	46.12473394028924
2019	45.923987979914
2020	45.766968607609996
2021	45.63500640364364
2022	45.393239579488146
2023	45.11204321697835