Year	% of total population
1960	53.208
1961	52.458
1962	51.706
1963	50.954
1964	50.2
1965	49.351
1966	48.501
1967	47.652
1968	46.803
1969	45.958
1970	45.169
1971	44.448
1972	43.728
1973	43.013
1974	42.3
1975	41.611
1976	40.925
1977	40.244
1978	39.566
1979	38.919
1980	38.307
1981	37.7
1982	37.096
1983	36.496
1984	35.900000000000006
1985	35.319
1986	34.742000000000004
1987	34.17
1988	33.601
1989	33.282
1990	33.242999999999995
1991	33.20399999999999
1992	33.165000000000006
1993	33.126000000000005
1994	33.087999999999994
1995	33.04900000000001
1996	33.010000000000005
1997	32.971000000000004
1998	32.93300000000001
1999	32.894000000000005
2000	32.855000000000004
2001	32.81699999999999
2002	32.717
2003	32.57299999999999
2004	32.403000000000006
2005	32.209999999999994
2006	32.031000000000006
2007	31.852999999999994
2008	31.674999999999997
2009	31.498000000000005
2010	31.403999999999996
2011	31.311000000000007
2012	31.218000000000004
2013	31.125
2014	31.031999999999996
2015	30.938999999999993
2016	30.846000000000004
2017	30.754000000000005
2018	30.647999999999996
2019	30.527
2020	30.391999999999996
2021	30.242999999999995
2022	30.081000000000003
2023	29.905