Year	Number
1960	3205850
1961	3245964
1962	3286394
1963	3326453
1964	3365863
1965	3404144
1966	3440957
1967	3477232
1968	3513665
1969	3552364
1970	3595734
1971	3643900
1972	3696696
1973	3758579
1974	3832321
1975	3912330
1976	3996590
1977	4084943
1978	4175502
1979	4267929
1980	4360093
1981	4450244
1982	4537375
1983	4621701
1984	4702633
1985	4778320
1986	4848559
1987	4913211
1988	4971148
1989	5021251
1990	5065402
1991	5104534
1992	5138240
1993	5168868
1994	5199112
1995	5228494
1996	5254725
1997	5278006
1998	5300147
1999	5323398
2000	5346107
2001	5364409
2002	5378308
2003	5388152
2004	5395230
2005	5400799
2006	5404425
2007	5406091
2008	5404947
2009	5403124
2010	5364898
2011	5382155
2012	5404485
2013	5429832
2014	5454489
2015	5478663
2016	5503337
2017	5522703
2018	5530243
2019	5526718
2020	5514055
2021	5494980
2022	5472525
2023	5444112