Year	% of total population
1960	3.33295127087345
1961	3.34233567241768
1962	3.35042292265198
1963	3.35992036835652
1964	3.3665312409442
1965	3.37331693554121
1966	3.38585593216699
1967	3.40069672587041
1968	3.41995948506725
1969	3.44643126093889
1970	3.47777348879499
1971	3.51322287385185
1972	3.55177001002682
1973	3.58546234842511
1974	3.60139937145744
1975	3.59512481675451
1976	3.56978588965176
1977	3.52654026455306
1978	3.4702972821859
1979	3.40913673079305
1980	3.34810098431387
1981	3.2863344451311
1982	3.22306309989436
1983	3.16164991724665
1984	3.10712403184138
1985	3.06062122720836
1986	3.02235138209373
1987	2.99268703019894
1988	2.96870954600419
1989	2.9465011501522
1990	2.92479559886834
1991	2.90445445829652
1992	2.88578107468613
1993	2.86987054131192
1994	2.85746522908415
1995	2.84738326373936
1996	2.83981705127183
1997	2.83583642290082
1998	2.8342984490557
1999	2.83204355101584
2000	2.82814079127522
2001	2.82366223380301
2002	2.81804755880288
2003	2.81030121906015
2004	2.79971961737075
2005	2.7856947125932
2006	2.76978931358604
2007	2.75388033440271
2008	2.73881243364463
2009	2.72632472312002
2010	2.71738327636493
2011	2.7143199005484
2012	2.71805702631341
2013	2.73237023786618
2014	2.78328040098983
2015	2.86153476255651
2016	2.93960767416895
2017	3.01787857043887
2018	3.09579919439156
2019	3.17545398210026
2020	3.2461993638906
2021	3.30005003345506
2022	3.3485616536753
2023	3.40476529964718