Year	Number
1960	3219628
1961	3286912
1962	3361590
1963	3439745
1964	3521999
1965	3608734
1966	3698885
1967	3792338
1968	3891244
1969	3995197
1970	4101985
1971	4211206
1972	4323409
1973	4443668
1974	4572950
1975	4707732
1976	4848956
1977	4993943
1978	5150192
1979	5317325
1980	5469241
1981	5617430
1982	5780715
1983	5936328
1984	6088207
1985	6250412
1986	6418672
1987	6600474
1988	6773193
1989	6936485
1990	7106372
1991	7280620
1992	7449923
1993	7606099
1994	7752238
1995	7897863
1996	8055926
1997	8220288
1998	8388467
1999	8565068
2000	8759918
2001	8971202
2002	9192331
2003	9421142
2004	9659383
2005	9910745
2006	10175192
2007	10451798
2008	10741307
2009	11051905
2010	11389643
2011	11748615
2012	12120760
2013	12490648
2014	12854942
2015	13242830
2016	13660007
2017	14096678
2018	14558539
2019	15038707
2020	15460194
2021	15771730
2022	16073197
2023	16473585