Year	Number
1960	2244590
1961	2314289
1962	2385593
1963	2460275
1964	2538539
1965	2620673
1966	2706758
1967	2796943
1968	2891269
1969	2989970
1970	3093137
1971	3201670
1972	3315173
1973	3431981
1974	3552378
1975	3676794
1976	3805780
1977	3939305
1978	4078224
1979	4222403
1980	4370703
1981	4522752
1982	4677820
1983	4840752
1984	5012760
1985	5189644
1986	5370881
1987	5555657
1988	5742199
1989	5928722
1990	6114715
1991	6300266
1992	6486359
1993	6675641
1994	6867800
1995	7062441
1996	7259001
1997	7455588
1998	7653005
1999	7852813
2000	8055934
2001	8265950
2002	8483717
2003	8707194
2004	8942531
2005	9190476
2006	9613142
2007	10247376
2008	10631467
2009	10806581
2010	11060526
2011	11256631
2012	11199824
2013	10658890
2014	9962642
2015	9541583
2016	9430784
2017	9451008
2018	9636103
2019	10024320
2020	10364931
2021	10643230
2022	11046621
2023	11601649