Year	Number
1960	4370335
1961	4430494
1962	4499692
1963	4578752
1964	4664946
1965	4756904
1966	4855968
1967	4959507
1968	5068965
1969	5185451
1970	5306225
1971	5421869
1972	5539724
1973	5670774
1974	5810480
1975	5961091
1976	6124183
1977	6300458
1978	6488958
1979	6688831
1980	6901106
1981	7122017
1982	7339651
1983	7543727
1984	7749488
1985	7977344
1986	8218262
1987	8465094
1988	8720387
1989	8985320
1990	9258874
1991	9542672
1992	9820605
1993	10104806
1994	10398250
1995	10689100
1996	10984633
1997	11278781
1998	11574227
1999	11877255
2000	12209940
2001	12556402
2002	12890470
2003	13224276
2004	13570027
2005	13918132
2006	14275952
2007	14650596
2008	15040483
2009	15447374
2010	15889720
2011	16348054
2012	16787280
2013	17207061
2014	17612650
2015	18035570
2016	18499230
2017	19018022
2018	19599061
2019	20222399
2020	20826418
2021	21384551
2022	22008714
2023	22774676