Year	% of total population
1960	44.9868480259741
1961	45.4739247793194
1962	45.8806538819468
1963	46.2207519921247
1964	46.4616418217543
1965	46.6650885158034
1966	46.8535782232595
1967	46.9967362198536
1968	47.1022915718319
1969	47.184816709851
1970	47.2563795472853
1971	47.3060374343601
1972	47.295136292865
1973	47.1986823554608
1974	47.028534892553
1975	46.7988847630249
1976	46.5148441957858
1977	46.2163396485482
1978	45.9428209423786
1979	45.717059573147
1980	45.628685053335
1981	45.653852368871
1982	45.6878980142672
1983	45.7515870719419
1984	45.9764190130528
1985	46.3125053405525
1986	46.6219636261404
1987	46.8484844948631
1988	46.9335782133154
1989	46.8935631161353
1990	46.7711038958937
1991	46.6167783998602
1992	46.3582303348865
1993	45.9758471610181
1994	45.53538060755
1995	45.0414115039767
1996	44.5151886968005
1997	43.9392117616555
1998	43.3138588994779
1999	42.7494974850198
2000	42.2794699062348
2001	41.8154975220564
2002	41.3516460816734
2003	40.9327493350294
2004	40.5597092800639
2005	40.2446269274445
2006	39.9681391752725
2007	39.7003773358888
2008	39.4634677578848
2009	39.2824215148219
2010	39.1736581739178
2011	39.1216785537295
2012	39.0918557601426
2013	39.0534054538399
2014	38.977251264556
2015	38.8585213664162
2016	38.6808587345277
2017	38.425003370446
2018	38.1507843998248
2019	37.886811205658
2020	37.5816131442611
2021	37.2548800435927
2022	36.9373919641612
2023	36.6031211255734