Year	Number
1960	4137077
1961	4261491
1962	4392323
1963	4529837
1964	4677168
1965	4831577
1966	4985118
1967	5141408
1968	5303824
1969	5471026
1970	5644479
1971	5829405
1972	6025491
1973	6231936
1974	6463611
1975	6719464
1976	6985965
1977	7267038
1978	7564023
1979	7874230
1980	8200719
1981	8542680
1982	8886923
1983	9190704
1984	9409814
1985	9576076
1986	9749846
1987	9918516
1988	10048781
1989	10193049
1990	10372354
1991	10545481
1992	10704351
1993	10908603
1994	11192341
1995	11493994
1996	11793467
1997	12103541
1998	12410574
1999	12728827
2000	13066984
2001	13397021
2002	13714630
2003	14031002
2004	14362444
2005	14728917
2006	15133106
2007	15566424
2008	16007627
2009	16452670
2010	16851113
2011	17193271
2012	17566190
2013	17985615
2014	18496684
2015	19084493
2016	19690357
2017	20344125
2018	21005857
2019	21624451
2020	22231053
2021	22842482
2022	23454198
2023	24074537