Year	% of total population
1960	82.602
1961	81.67
1962	80.406
1963	79.077
1964	77.682
1965	76.225
1966	74.703
1967	73.117
1968	71.467
1969	69.763
1970	68
1971	65.918
1972	63.769
1973	61.57
1974	59.319
1975	57.029
1976	54.705
1977	52.367
1978	50.015
1979	47.663
1980	45.318
1981	43
1982	41.628
1983	40.27
1984	38.924
1985	37.598
1986	36.289
1987	35
1988	33.587999999999994
1989	32.208
1990	30.857
1991	29.537999999999997
1992	28.251000000000005
1993	27.001000000000005
1994	26.078999999999994
1995	25.203000000000003
1996	24.346000000000004
1997	23.510000000000005
1998	22.694000000000003
1999	21.897999999999996
2000	21.120999999999995
2001	20.367000000000004
2002	19.632000000000005
2003	18.917
2004	18.221999999999994
2005	17.548000000000002
2006	16.893
2007	16.257999999999996
2008	15.641000000000005
2009	15.045000000000002
2010	14.466999999999999
2011	13.908000000000001
2012	13.366
2013	12.843999999999994
2014	12.349000000000004
2015	11.882000000000005
2016	11.441000000000003
2017	11.024000000000001
2018	10.629999999999995
2019	10.259
2020	9.908000000000001
2021	9.576999999999998
2022	9.265
2023	8.971000000000004