Year	% of total population
1960	53.4722640222676
1961	53.077802935257
1962	52.6971412818504
1963	52.3775731788594
1964	52.1610559193438
1965	52.0892242917042
1966	52.1444920373103
1967	52.2750085875704
1968	52.4760682980132
1969	52.7463947014757
1970	53.0890670791588
1971	53.4986852522291
1972	53.9579007006232
1973	54.4761591890928
1974	55.0516998675086
1975	55.6609657970463
1976	56.2963413375787
1977	56.9484051975011
1978	57.6017443886813
1979	58.2430438218712
1980	58.8396688050913
1981	59.3746767841141
1982	59.8505053467751
1983	60.2686411622615
1984	60.6303457949939
1985	60.9317957893575
1986	61.1816553626796
1987	61.3836436999873
1988	61.5307574872775
1989	61.632712877091
1990	61.698500378824
1991	61.7358626672298
1992	61.7444356227898
1993	61.7336025077025
1994	61.7136437675973
1995	61.6969373674781
1996	61.7252274380061
1997	61.8345345741289
1998	62.0328165967473
1999	62.3062812864294
2000	62.634165933249
2001	63.0065778542192
2002	63.4167650856349
2003	63.8481489276884
2004	64.3075338210961
2005	64.8090735644328
2006	65.3388158102835
2007	65.8829968984405
2008	66.419294173607
2009	66.9359399960724
2010	67.4069416157997
2011	67.7901431883982
2012	68.0628678653188
2013	68.2191184386359
2014	68.2899391214319
2015	68.2998896263132
2016	68.2347626553116
2017	68.155645969323
2018	68.0665850310722
2019	67.897689659306
2020	67.7063681600196
2021	67.4840351559353
2022	67.1981982330638
2023	66.8734790051966