Year	% of total population
1960	68.9778381238754
1961	68.2453225499139
1962	67.50516821906527
1963	66.73850733217483
1964	65.94620679518559
1965	65.11701490015844
1966	64.32674609110275
1967	63.642371868086755
1968	62.94295114499534
1969	62.23288712493574
1970	61.518451605282486
1971	60.830999296744196
1972	60.12890850703474
1973	59.43376230003736
1974	58.80227009811931
1975	58.20124911405361
1976	57.55553426165511
1977	56.93392509833999
1978	56.45818833102976
1979	56.02823280862183
1980	55.51620774196539
1981	54.96567816688814
1982	54.428833781377804
1983	53.861223056845866
1984	53.2235330155122
1985	52.61033760591875
1986	51.99468068858874
1987	51.42483226132694
1988	50.90019807713363
1989	50.404915328081564
1990	49.92558791986099
1991	49.528824779972936
1992	48.980973293894785
1993	48.565191070459484
1994	48.297585830391306
1995	48.101496415201346
1996	47.908076112038614
1997	47.68382527771219
1998	47.437998959906835
1999	47.18947406662699
2000	46.944002620446334
2001	46.6881988507604
2002	46.43356724130649
2003	46.16983788830101
2004	45.90447753136272
2005	45.564776932792796
2006	45.16569961828496
2007	44.88033174486472
2008	44.44070760581176
2009	44.00324305717799
2010	43.61958244435512
2011	43.3620048705326
2012	43.13577864884422
2013	42.82202617896922
2014	42.492739168208
2015	42.15384686772229
2016	41.87674461785684
2017	41.62871003329355
2018	41.370423843610446
2019	41.116183025036406
2020	40.91238098895934
2021	40.70511353302328
2022	40.442529347974485
2023	40.17224209682515