Year	Number
1960	2354117
1961	2389470
1962	2426004
1963	2463142
1964	2500949
1965	2539277
1966	2578294
1967	2617960
1968	2658341
1969	2699281
1970	2740960
1971	2799913
1972	2874687
1973	2951342
1974	3030253
1975	3111377
1976	3194895
1977	3280523
1978	3368679
1979	3459317
1980	3552640
1981	3622487
1982	3631112
1983	3639763
1984	3648453
1985	3657147
1986	3665879
1987	3674639
1988	3683437
1989	3692239
1990	3701080
1991	3712933
1992	3736077
1993	3759306
1994	3782714
1995	3806273
1996	3830016
1997	3853844
1998	3877858
1999	3902026
2000	3926382
2001	3948283
2002	3964497
2003	3980785
2004	3997170
2005	4013584
2006	4030097
2007	4046685
2008	4063373
2009	4080090
2010	4096908.0000000005
2011	4113801.9999999995
2012	4130774.0000000005
2013	4147823.0000000005
2014	4164951
2015	4182156
2016	4199441
2017	4216806
2018	4234250
2019	4251902
2020	4269826
2021	4288032
2022	4306509
2023	4325188