Year	Number
1960	452924
1961	484653
1962	518708.99999999994
1963	547666
1964	577186
1965	608223
1966	640992
1967	675544
1968	712028
1969	750391
1970	784680
1971	819433
1972	855825
1973	893778
1974	933523
1975	975092
1976	1018630
1977	1064043
1978	1111611
1979	1161369
1980	1211737
1981	1263897
1982	1318454
1983	1375443
1984	1435062
1985	1497173
1986	1562150
1987	1630037
1988	1701066
1989	1775080
1990	1856342
1991	1942074
1992	2031944
1993	2125762
1994	2224107
1995	2327061
1996	2434994
1997	2547679
1998	2665809
1999	2789488
2000	2897252
2001	3004975
2002	3116880
2003	3232974
2004	3353583
2005	3478364
2006	3607993
2007	3742477
2008	3882195
2009	4026748
2010	4176921.9999999995
2011	4332724
2012	4494367
2013	4662069
2014	4836060
2015	5016577
2016	5203864
2017	5398177
2018	5599781
2019	5810192
2020	6030856
2021	6263105
2022	6507823
2023	6765556