Year	Number
1960	832835
1961	836928
1962	840755
1963	846483
1964	853214
1965	861025
1966	870761
1967	879895
1968	886618
1969	890409
1970	895166
1971	901505
1972	908426
1973	915674
1974	920263
1975	928998
1976	942534
1977	953674
1978	963770
1979	973805
1980	983168
1981	985698
1982	987671
1983	994017
1984	999310
1985	1004379
1986	1017083
1987	1029550
1988	1032546
1989	1033340
1990	1034494
1991	1034881
1992	1032495
1993	1029095
1994	1026959
1995	1026223
1996	1024656
1997	1022394
1998	1019259
1999	1019098
2000	1021311
2001	1022211
2002	1022497
2003	1021709
2004	1020858
2005	1020982
2006	1022532
2007	1026612
2008	1026544
2009	1033990
2010	1036572
2011	1037546
2012	1039195
2013	1040114
2014	1040642
2015	1039891
2016	1038201
2017	1036459
2018	1037800
2019	1042591
2020	1047063
2021	1048601
2022	1050321
2023	1054325