Year	Number
1960	2455581
1961	2523274
1962	2587008
1963	2649872
1964	2714352
1965	2780218
1966	2847776
1967	2916976
1968	2987956
1969	3060460
1970	3134828
1971	3211003
1972	3247377
1973	3264905
1974	3282552
1975	3300294
1976	3318157
1977	3336067
1978	3354099
1979	3372228
1980	3390480
1981	3408780
1982	3437228
1983	3470633
1984	3504408
1985	3538418
1986	3572806
1987	3607528
1988	3642636
1989	3677987
1990	3713731
1991	3749823
1992	3756840
1993	3750746
1994	3744654
1995	3738572
1996	3732492
1997	3726438
1998	3720385
1999	3714343
2000	3708301
2001	3702287
2002	3720203
2003	3749039
2004	3778139
2005	3807383
2006	3836895
2007	3866636
2008	3896648
2009	3926810
2010	3957247
2011	3987921
2012	4018875
2013	4050069
2014	4081506
2015	4113185.9999999995
2016	4145112
2017	4177286
2018	4209710
2019	4234019
2020	4257056
2021	4278350
2022	4297877
2023	4315671