Year	% of total population
1960	58.5791520957561
1961	58.2861461171662
1962	57.8385167960802
1963	57.2285497342445
1964	56.4015566815816
1965	55.2567529443268
1966	54.0646199839025
1967	53.2406317332682
1968	52.8026954131444
1969	52.5111023760339
1970	52.2607866604459
1971	52.0867108431839
1972	52.0243834476546
1973	52.0875944864384
1974	52.1298225537719
1975	51.9881083800288
1976	51.7798837031888
1977	51.6791124667719
1978	51.5939753244672
1979	51.5022516622382
1980	51.494209653307
1981	51.5686979482857
1982	51.7394605280121
1983	52.01252373292
1984	52.2496040957112
1985	52.1119214637823
1986	51.6497696787164
1987	51.1989855867147
1988	50.8803750710362
1989	50.6742774287982
1990	50.4625328396094
1991	50.2601766099505
1992	50.1740644948157
1993	50.2374458755601
1994	50.4809655790421
1995	50.9891250464742
1996	51.747545401311
1997	52.6457032411537
1998	53.6777381700244
1999	54.8611885182535
2000	56.1618936201468
2001	57.5073044843182
2002	58.8346588158415
2003	60.1391872500845
2004	61.4428342344221
2005	62.7388296451674
2006	64.2074360568765
2007	65.8541611559826
2008	67.4063398865482
2009	68.74027681879
2010	69.8456334724932
2011	70.7368727474726
2012	71.4251063439985
2013	71.9479297678226
2014	72.4288401825607
2015	72.8760600759444
2016	73.229206223411
2017	73.5130449875329
2018	73.7357021222726
2019	73.8554195374504
2020	73.8265835727532
2021	73.73793645695
2022	73.5375257499709
2023	73.2225061729698