Year	Number
1960	3589856
1961	3732508
1962	3870053
1963	4000801
1964	4124096
1965	4231594
1966	4322062
1967	4401669
1968	4472994
1969	4538903
1970	4600255
1971	4656336
1972	4707526
1973	4759670
1974	4814015
1975	4867697
1976	4921228
1977	4976932
1978	5036695
1979	5102500
1980	5178431
1981	5266805
1982	5368538
1983	5481601
1984	5602807
1985	5729714
1986	5860792
1987	5993822
1988	6123740
1989	6248017
1990	6372869
1991	6504852
1992	6644389
1993	6789408
1994	6937235
1995	7083370
1996	7223317
1997	7354360
1998	7471471
1999	7572870
2000	7693547
2001	7828407
2002	7939438
2003	8023491
2004	8081894
2005	8117736
2006	8132989
2007	8131555
2008	8107861
2009	8057571
2010	7990780
2011	7934073
2012	7896650
2013	7866957
2014	7842526
2015	7822097
2016	7802353
2017	7783104
2018	7766141
2019	7748190
2020	7727992
2021	7709094
2022	7694765
2023	7691215