Year	% of total population
1960	5.06202899205713
1961	5.11609294151557
1962	4.97879476883879
1963	4.88900825336487
1964	4.81825404707518
1965	4.81609346441925
1966	4.809845717587
1967	4.75503106803878
1968	4.71989318633575
1969	4.69186742978837
1970	4.68449232461461
1971	4.80283711221363
1972	5.0458540351752
1973	5.31295707873102
1974	5.59770300873504
1975	5.89301371499618
1976	6.19211426231602
1977	6.49296889267669
1978	6.79886282582499
1979	7.11754059880825
1980	7.45275789542334
1981	7.62902350268401
1982	7.58592479328379
1983	7.48404712810748
1984	7.36394170453847
1985	7.22956685859079
1986	7.09320146515254
1987	6.94066050367615
1988	6.78180526598835
1989	6.64841582279982
1990	6.55417771902223
1991	6.52748899322692
1992	6.58217174070379
1993	6.67472173884493
1994	6.76218782111711
1995	6.84813219006608
1996	6.94130799882265
1997	7.03122058686008
1998	7.11466273138862
1999	7.18806254964537
2000	7.25406956080811
2001	7.30275413210907
2002	7.28675791978473
2003	7.22564660251269
2004	7.15633835545429
2005	7.07371182864358
2006	6.99344940098134
2007	6.94118331942639
2008	6.92529938747369
2009	6.96501608593406
2010	7.07881075979236
2011	7.29085486416008
2012	7.62912761800824
2013	8.04805067971522
2014	8.49268496955312
2015	8.94977399027045
2016	9.42134728816629
2017	9.92618331404662
2018	10.4804060271187
2019	11.0754498777598
2020	11.6795039946295
2021	12.3214590005636
2022	12.995698165265
2023	13.6644277955179