Year	Number
1960	691564
1961	702988
1962	714790
1963	727807
1964	742617
1965	758947
1966	776319
1967	792675
1968	808252
1969	823442
1970	838263
1971	852873
1972	867420
1973	881807
1974	896001
1975	909514
1976	922065
1977	932668
1978	941706
1979	949389
1980	956217
1981	963307
1982	970366
1983	976040
1984	979801
1985	982476
1986	984946
1987	987863
1988	991186
1989	994851
1990	997840
1991	999792
1992	1000535
1993	1000652
1994	1000170
1995	999227
1996	1003079
1997	1006343
1998	1013953
1999	1021765
2000	1027756
2001	1032154
2002	1037673
2003	1043504
2004	1048731
2005	1052266
2006	1053567
2007	1053989
2008	1054733
2009	1056313
2010	1058563
2011	1061035
2012	1062701
2013	1060524
2014	1050919
2015	1029609
2016	1004381
2017	975096
2018	947698
2019	923251
2020	905464
2021	886210
2022	879394
2023	867716