Year	% of total population
1960	39.7482420832152
1961	40.0158679650706
1962	40.3304215393334
1963	40.6898452178622
1964	41.0643700593424
1965	41.4691250636623
1966	41.8600004316292
1967	42.1652779906778
1968	42.3708639033148
1969	42.4844100155609
1970	42.5342287706198
1971	42.5227268915297
1972	42.4512482991784
1973	42.331108609885
1974	42.1601966288762
1975	41.940881266955
1976	41.6843727588308
1977	41.3956212878516
1978	41.0866385308351
1979	40.7611724420572
1980	40.4140900426339
1981	40.0413070822588
1982	39.6527351916317
1983	39.2543662420948
1984	38.8355362821279
1985	38.3745352164627
1986	37.8680785290718
1987	37.3456280569366
1988	36.820874334381
1989	36.2957566272302
1990	35.7578283129467
1991	35.2179951699015
1992	34.6797787588542
1993	34.1281649093116
1994	33.5780992781131
1995	33.0397746419527
1996	32.5224438778193
1997	32.0232254424488
1998	31.532679468303
1999	31.0509721894719
2000	30.6120751289769
2001	30.2370891591003
2002	29.8904893579276
2003	29.5491311393004
2004	29.22273755226
2005	28.9371160924099
2006	28.6825673004558
2007	28.4602333111607
2008	28.26978404013
2009	28.0756308812162
2010	27.8719609703903
2011	27.6736541283578
2012	27.4798357119445
2013	27.2781654669592
2014	27.0780193892504
2015	26.8757621605868
2016	26.6614853832716
2017	26.4374424838006
2018	26.2042610175391
2019	25.9624659842084
2020	25.7189360206748
2021	25.4764856786637
2022	25.2064862015063
2023	24.8820533770582