Year	Number
1960	3950306
1961	4041639
1962	4138891
1963	4240457
1964	4348405
1965	4462364
1966	4581284
1967	4708331
1968	4843006
1969	4981468
1970	5117684
1971	5227719
1972	5345739
1973	5499726
1974	5659304
1975	5812989
1976	5970513
1977	6141859
1978	6325896
1979	6516493
1980	6694469
1981	6868317
1982	7058355
1983	7253299
1984	7450084
1985	7653474
1986	7856139
1987	8066192
1988	8266576
1989	8456309
1990	8649915
1991	8847106
1992	9067165
1993	9300287
1994	9519988
1995	9744045
1996	9980996
1997	10231795
1998	10511510
1999	10824201
2000	11149407
2001	11478851
2002	11833212
2003	12196859
2004	12553134
2005	12915479
2006	13289079
2007	13661870
2008	14036430
2009	14434908
2010	14869603
2011	15339855
2012	15841498
2013	16359636
2014	16895130
2015	17476701
2016	18121732
2017	18825034
2018	19584817
2019	20404163
2020	21224285
2021	21998444
2022	22791336
2023	23665760