Year	Number
1960	2134673
1961	2183523
1962	2233459
1963	2284537
1964	2336856
1965	2390224
1966	2445016
1967	2549933
1968	2659506
1969	2773466
1970	2892477
1971	3016037
1972	3041223
1973	3066549
1974	3092121
1975	3117906
1976	3143945
1977	3170608
1978	3197534
1979	3224688
1980	3252111
1981	3279743
1982	3317267
1983	3355221
1984	3393661
1985	3432435
1986	3471704
1987	3511087
1988	3550973
1989	3591200
1990	3631940
1991	3673110
1992	3709165
1993	3745472
1994	3782186
1995	3819260
1996	3856593
1997	3837252
1998	3817981
1999	3798807
2000	3779704
2001	3760877
2002	3789046
2003	3817426
2004	3846058
2005	3874825
2006	3903942
2007	3967807
2008	4032807
2009	4098688
2010	4165738.9999999995
2011	4233904
2012	4309560
2013	4386354
2014	4464625
2015	4544293
2016	4625496
2017	4708150
2018	4792281
2019	4870388
2020	4967733
2021	5061439
2022	5150766
2023	5235407