Year	Number
1960	4476521
1961	4556369
1962	4642166
1963	4732954
1964	4828823
1965	4930806
1966	5037166
1967	5148111
1968	5264694
1969	5385983
1970	5513404
1971	5643110
1972	5776971
1973	5920001
1974	6066275
1975	6209118
1976	6342102
1977	6472323
1978	6596024
1979	6612822
1980	6349775
1981	5665035
1982	5114320
1983	5035098
1984	5169086
1985	5286542
1986	5241168
1987	5170108
1988	5195399
1989	5338559
1990	5348387
1991	5372959
1992	6028494
1993	7003641
1994	7733458
1995	8219467
1996	8569175
1997	8916862
1998	9275541
1999	9667811
2000	9815442
2001	9895467
2002	10562202
2003	11397483
2004	11862726
2005	12302104
2006	12828447
2007	13067961
2008	13339006
2009	13827977
2010	14240377
2011	14780282
2012	15399105
2013	15946572
2014	16543889
2015	17071446
2016	17520861
2017	18028696
2018	18549862
2019	19090409
2020	19692301
2021	20254878
2022	20766442
2023	21319695