Year	Number
1960	2486782
1961	2553648
1962	2622418
1963	2693253
1964	2766294
1965	2841601
1966	2919675
1967	3001173
1968	3086629
1969	3176494
1970	3270999
1971	3371075
1972	3476039
1973	3584299
1974	3695584
1975	3809764
1976	3926778
1977	4046766
1978	4169848
1979	4295829
1980	4424114
1981	4554099
1982	4686381
1983	4821383
1984	4959283
1985	5101070
1986	5246816
1987	5398398
1988	5557278
1989	5722986
1990	5896690
1991	6078585
1992	6268243
1993	6467292
1994	6676136
1995	6893814
1996	7119438
1997	7351215
1998	7587511
1999	7827050
2000	8068707
2001	8313779
2002	8563371
2003	8818285
2004	9080850
2005	9351211
2006	9629821
2007	9917175
2008	10211594
2009	10513195
2010	10820101
2011	11128890
2012	11438460
2013	11750494
2014	12065787
2015	12383941
2016	12710056
2017	13044649
2018	13384012
2019	13728596
2020	14076752
2021	14424717
2022	14775496
2023	15135032