Year	% of total population
1960	3.0490691519240993
1961	3.001928773073354
1962	2.9579041754205564
1963	2.916559806757494
1964	2.8837603621730787
1965	2.8631853103558025
1966	2.877521101223093
1967	2.8817767785908077
1968	2.8537115799277473
1969	2.827976798657907
1970	2.81572064575862
1971	2.8163203484571504
1972	2.8200025740405357
1973	2.8234017793687882
1974	2.8256059560429025
1975	2.828207923921698
1976	2.8246886957624375
1977	2.817635959567503
1978	2.8315296316070144
1979	2.907620386178233
1980	2.9761450699829153
1981	2.9954164921102953
1982	3.018225039013096
1983	3.046116896684117
1984	3.0757785011851624
1985	3.1107576382777977
1986	3.1573938165413677
1987	3.186745032609444
1988	3.1950529044456153
1989	3.207446280033673
1990	3.2174062563403245
1991	3.226238984526749
1992	3.243901832279135
1993	3.2678190872459796
1994	3.291098390658398
1995	3.3105672641677035
1996	3.32593011838254
1997	3.3497821748851493
1998	3.382468976141061
1999	3.4194588489945765
2000	3.4667707667161998
2001	3.520237640441904
2002	3.5737451903460853
2003	3.629946379731686
2004	3.6896211676831734
2005	3.7475538201590473
2006	3.80377536857705
2007	3.859278256349551
2008	3.902432572255031
2009	3.9345229862197657
2010	3.9699331806780602
2011	4.016034603590848
2012	4.070278161291386
2013	4.129386845974056
2014	4.191917729998467
2015	4.243108677560451
2016	4.2895417122151285
2017	4.354856232668889
2018	4.4387003269944305
2019	4.534298677232281
2020	4.633670175573278
2021	4.7249382298869085
2022	4.817685296158188
2023	4.9232970385530255