Year	Number
1960	4246758
1961	4403894
1962	4563911
1963	4733408
1964	4904119
1965	5074929
1966	5249687
1967	5429541
1968	5615789
1969	5804923
1970	5994916
1971	6174038
1972	6344500
1973	6519420
1974	6696255
1975	6874713
1976	7058138
1977	7247279
1978	7441306
1979	7639872
1980	7841951
1981	8113242
1982	8480857
1983	8930222
1984	9461212
1985	10103142
1986	10658457
1987	11033243
1988	11385836
1989	11715460
1990	12011821
1991	12239009
1992	12465902
1993	12762770
1994	13093650
1995	13460333
1996	13851016
1997	14204460
1998	14521654
1999	14841279
2000	15162643
2001	15491495
2002	15829335
2003	16157249
2004	16459421
2005	16728715
2006	16975266
2007	17211580
2008	17438448
2009	17660008
2010	17881744
2011	18098813
2012	18295386
2013	18472028
2014	18682203
2015	18976914
2016	19085903
2017	19091155
2018	19235276
2019	19406123
2020	19596277
2021	19787410
2022	19981428
2023	20207713