Year	Number
1960	2028290
1961	2112994
1962	2180561
1963	2246646
1964	2323968
1965	2442198
1966	2560853
1967	2657166
1968	2772865
1969	2881810
1970	2972663
1971	3075163
1972	3194676
1973	3303733
1974	3424706
1975	3551778
1976	3684096
1977	3837090
1978	3978014
1979	4086906
1980	4145453
1981	4137847
1982	4089471
1983	4062644
1984	4069763
1985	4066341
1986	4078637
1987	4135037
1988	4218694
1989	4323298
1990	4431006
1991	4539784
1992	4628669
1993	4708547
1994	4766211
1995	4800662
1996	4812016
1997	4785978
1998	4724979
1999	4642550
2000	4601930
2001	4624469
2002	4717977
2003	4836517
2004	4931602
2005	4995577
2006	5029692
2007	5018377
2008	4938910
2009	4843466
2010	4739881
2011	4666320
2012	4648350
2013	4648136
2014	4677505
2015	4743208
2016	4808160
2017	4875111
2018	4932923
2019	5003029
2020	5060757
2021	5090850
2022	4803489
2023	5042996