Year	% of total population
1960	54.246046569543
1961	53.8477643188276
1962	53.4886068647245
1963	53.0713659331023
1964	52.5908406794238
1965	52.1030644282415
1966	52.0928777068469
1967	52.588895066354
1968	53.1341014094391
1969	53.6712275968395
1970	54.1978936247483
1971	54.8774715462897
1972	55.8157747134708
1973	56.9305021317405
1974	58.2025222704549
1975	59.6697897274697
1976	61.3669833968811
1977	63.0440901505861
1978	64.5353279446656
1979	65.8812535795746
1980	67.2125094799026
1981	68.5653446899122
1982	69.776591807717
1983	70.7554247460757
1984	71.4234148658276
1985	71.771890266817
1986	71.8505420873854
1987	71.6959915942376
1988	71.3562013947205
1989	70.9096991780971
1990	70.3564812316768
1991	69.7803530521493
1992	69.2597081930415
1993	68.7522438428951
1994	68.2776635757309
1995	67.9937261931436
1996	67.8904574696212
1997	67.8324297332002
1998	67.8275201567998
1999	67.8949854294957
2000	68.0789904599174
2001	68.3485262299152
2002	68.6519932820649
2003	68.9556395815155
2004	69.2452432033201
2005	69.5440082971505
2006	69.8324268187499
2007	70.0924031882627
2008	70.3000309310238
2009	70.4395662804295
2010	70.5923586094302
2011	70.7785920497446
2012	70.9387261225833
2013	71.0576048779618
2014	71.1156784772798
2015	71.1143314637397
2016	71.0708920523643
2017	70.9588306289392
2018	70.7657649603976
2019	70.4883739641162
2020	70.1114651102603
2021	69.6531123873193
2022	69.1274395211277
2023	68.552160019773