Year	Number
1960	3626201
1961	3753417
1962	3881925
1963	4011118
1964	4137052
1965	4256584
1966	4369989
1967	4475892
1968	4572507
1969	4658623
1970	4734095
1971	4798965
1972	4854154
1973	4901546
1974	4942703
1975	4979518
1976	5013753
1977	5047841
1978	5083522
1979	5121387
1980	5162666
1981	5207886
1982	5257706
1983	5312530
1984	5372623
1985	5435951
1986	5503632
1987	5577342
1988	5654594
1989	5734136
1990	5814156
1991	5891400
1992	5964052
1993	6031395
1994	6091444
1995	6143271
1996	6187111
1997	6223048
1998	6252049
1999	6274626
2000	6290447
2001	6299059
2002	6299761
2003	6291615
2004	6273642
2005	6245174
2006	6204136
2007	6151640
2008	6090535
2009	6024869
2010	5958905
2011	5892199
2012	5824777
2013	5757423
2014	5690063
2015	5625542
2016	5570334
2017	5531882
2018	5508007
2019	5489346
2020	5469585
2021	5450187
2022	5423484
2023	5388272