Year	Number
1960	3582744
1961	3672435
1962	3784275
1963	3912316
1964	4044133
1965	4181151
1966	4323269
1967	4470599
1968	4623958
1969	4783747
1970	4950225
1971	5120686
1972	5295288
1973	5475982
1974	5661027
1975	5849037
1976	6039010
1977	6236881
1978	6443907
1979	6648039
1980	6858453
1981	7072839
1982	7283232
1983	7511326
1984	7758267
1985	7956320
1986	8163006
1987	8397291
1988	8603421
1989	8840284
1990	8950340
1991	9043704
1992	9309748
1993	9760768
1994	10232966
1995	10577414
1996	10915862
1997	11254162
1998	11607960
1999	11984710
2000	12383050
2001	12775683
2002	13184691
2003	13588897
2004	13986188
2005	14410735
2006	14521163
2007	14407413
2008	14692161
2009	15226676
2010	15709180
2011	16258743
2012	16993544
2013	17793123
2014	18414828
2015	18907546
2016	19369155
2017	19826367
2018	20301429
2019	20774818
2020	21259406
2021	21736184
2022	22205751
2023	22698062