Year	Number
1960	199078
1961	201083
1962	204693
1963	208519
1964	212558
1965	216826
1966	221338
1967	226094
1968	230903
1969	233194
1970	231523
1971	227585
1972	222499
1973	216900
1974	211180
1975	205620
1976	200094
1977	196493
1978	195871
1979	197831
1980	203768
1981	213908
1982	227150
1983	241947
1984	254076
1985	265092
1986	274633
1987	282802
1988	290113
1989	297056
1990	303794
1991	310428
1992	317014
1993	323628
1994	330308
1995	333674
1996	336803
1997	339767
1998	342475
1999	344873
2000	348708
2001	353651
2002	357654
2003	360829
2004	363324
2005	365433
2006	367319
2007	369089
2008	370676
2009	371991
2010	372795
2011	372128
2012	370027
2013	378855
2014	387480
2015	395795
2016	403758
2017	411330
2018	418437
2019	425111
2020	429337
2021	432136
2022	435309
2023	438133