Year	% of total population
1960	56.72634662077229
1961	56.5392045576179
1962	56.38645979392557
1963	56.22168334980427
1964	56.068286299499185
1965	55.92012737773588
1966	55.78430616066454
1967	55.66116457834541
1968	55.526400565759495
1969	55.399598863824075
1970	55.284101710276325
1971	55.15305837960725
1972	55.00185946573951
1973	54.86530770141243
1974	54.752918294024695
1975	54.644582394726754
1976	54.52608486341842
1977	54.411999448521904
1978	54.324502986196734
1979	54.24286903793047
1980	54.18433478878328
1981	54.15379306600739
1982	54.12130766838615
1983	54.079200495360325
1984	54.028083177268705
1985	53.98709520782738
1986	53.95175728199113
1987	53.91090367290726
1988	53.87789997650949
1989	53.859330780943935
1990	53.834636933116684
1991	53.85350737187923
1992	53.87320768529883
1993	53.873474360848455
1994	53.953102501807905
1995	54.07543095883865
1996	54.133058416855135
1997	54.194602160044454
1998	54.31255228298205
1999	54.45746472951229
2000	54.58920520055007
2001	54.70492047960544
2002	54.78044384061163
2003	54.8310330167988
2004	54.89621215318178
2005	54.9740026239581
2006	55.06468863185187
2007	55.14612759643081
2008	55.211993570581164
2009	55.276482180525846
2010	55.34123446312035
2011	55.38848430707671
2012	55.41051984606232
2013	55.41965444097177
2014	55.43251456345289
2015	55.46497137774025
2016	55.52475417196946
2017	55.60500667134976
2018	55.69805062431203
2019	55.81607697822674
2020	55.9726809689747
2021	56.15334765372695
2022	56.24827247991536
2023	56.44862782993695