Year	% of total population
1960	28.046252044118237
1961	28.18781933812941
1962	28.35459139489045
1963	28.519689365934298
1964	28.68302304581548
1965	28.851954985614658
1966	28.72379742196836
1967	28.508729660744592
1968	28.346128776375508
1969	28.200173349196422
1970	27.99939213882932
1971	27.186998677849406
1972	26.093217479940282
1973	25.037769862606712
1974	24.057216056854532
1975	23.156086075074775
1976	22.56840481678415
1977	22.255517873036794
1978	21.946837222642788
1979	21.65649983261026
1980	21.39619798997741
1981	21.212178604537826
1982	21.080129977470833
1983	20.94790349484983
1984	20.812897048860645
1985	20.65996948192607
1986	20.510595184017916
1987	20.38570523562987
1988	20.277273723290854
1989	20.194466969333636
1990	20.13814985939339
1991	20.082269205234155
1992	20.03353076650868
1993	20.00578958445277
1994	20.017018236019503
1995	20.032032878222136
1996	20.057194711683703
1997	20.100904618380618
1998	20.12211411331244
1999	20.14752905925233
2000	20.172443112014047
2001	20.192252606608626
2002	20.284505139667903
2003	20.45290538632806
2004	20.625798058404044
2005	20.795980095331025
2006	20.956740806786932
2007	21.09874725301285
2008	21.21580647809523
2009	21.344029027203046
2010	21.492882704365048
2011	21.66669778256165
2012	21.867410452731363
2013	22.059056102549416
2014	22.231515156884722
2015	22.360707333865516
2016	22.474419562815008
2017	22.618881591956956
2018	22.797876842797855
2019	22.941024920447813
2020	23.090236930934644
2021	23.197369591545318
2022	23.21061175798153
2023	23.222064008587928