Year	% of total population
1960	7.70853625277594
1961	7.71822871436026
1962	7.72043579316562
1963	7.71538062907441
1964	7.70446965199197
1965	7.68772772516825
1966	7.66444503623945
1967	7.63515051764108
1968	7.60062132699687
1969	7.54821869633339
1970	7.48176465860226
1971	7.41593932033062
1972	7.34955354380879
1973	7.27969047109343
1974	7.20541143619726
1975	7.12703892423192
1976	7.04534888946682
1977	6.96048022068394
1978	6.8708882445042
1979	6.77846443550458
1980	6.68274419837173
1981	6.58261201488611
1982	6.47852986062299
1983	6.37308538975229
1984	6.26793069975774
1985	6.16346510290636
1986	6.06061638720062
1987	5.95878638676753
1988	5.85734644220518
1989	5.75744713327318
1990	5.65970941809868
1991	5.56443348729449
1992	5.47151369806236
1993	5.3817825482769
1994	5.29603305014306
1995	5.21393734558328
1996	5.13557697238226
1997	5.05939112023502
1998	4.98494832340358
1999	4.91181042010793
2000	4.83897639666456
2001	4.76706541455238
2002	4.69711469662278
2003	4.62867206302971
2004	4.55846919380612
2005	4.48454523698995
2006	4.41001521096521
2007	4.33766611701645
2008	4.26777743193969
2009	4.20098316250303
2010	4.13843685805371
2011	4.08149506346968
2012	4.03173073520244
2013	3.98454127308183
2014	3.94281633805839
2015	3.91630930379188
2016	3.90172492594809
2017	3.89428073948628
2018	3.8936383317332
2019	3.89945895405513
2020	3.90439039454796
2021	3.89782242195065
2022	3.88691048632426
2023	3.89217778377894