Year	Number
1960	2670229
1961	2704394
1962	2742689
1963	2779473
1964	2812590
1965	2838939
1966	2856740
1967	2867926
1968	2879001
1969	2902120
1970	2953347
1971	3032948
1972	3132441
1973	3244749
1974	3362438
1975	3483416
1976	3606782
1977	3735823
1978	3872130
1979	4014347
1980	4164145
1981	4321167
1982	4485276
1983	4656894
1984	4834820
1985	5018620
1986	5206761
1987	5396035
1988	5588733
1989	5787505
1990	5991207
1991	6199060
1992	6408303
1993	6621767
1994	6845622
1995	7077381
1996	7315200
1997	7561436
1998	7813123
1999	8071413
2000	8339311
2001	8619083
2002	8912191
2003	9219638
2004	9545020
2005	9886765
2006	10244381
2007	10620174
2008	11013001
2009	11422969
2010	11853530
2011	12303450
2012	12770743
2013	13252938
2014	13746371
2015	14248799
2016	14764575
2017	15293335
2018	15828040
2019	16370553
2020	16910989
2021	17452283
2022	17998220
2023	18548657