Year	Number
1960	2765763
1961	2826456
1962	2887559
1963	2948933
1964	3011363
1965	3075159
1966	3138321
1967	3200620
1968	3262427
1969	3324135
1970	3328633
1971	3305067
1972	3323742
1973	3351162
1974	3366403
1975	3223398
1976	2958874
1977	2811653
1978	2762829
1979	2796245
1980	2864782
1981	2946970
1982	3073843
1983	3204343
1984	3329805
1985	3450448
1986	3596108
1987	3761124
1988	3913102
1989	4069201
1990	4249932
1991	4435706
1992	4693520
1993	4994432
1994	5208877
1995	5353490
1996	5487409
1997	5614524
1998	5730750
1999	5843626
2000	5956510
2001	6069095
2002	6183561
2003	6299051
2004	6416257
2005	6534657
2006	6653611
2007	6775426
2008	6893678
2009	7001368
2010	7104881
2011	7209608
2012	7315560
2013	7421511
2014	7526346
2015	7629132
2016	7731897
2017	7834347
2018	7930999
2019	8021264
2020	8115527
2021	8212068
2022	8299527
2023	8384561