Year	Number
1960	262443
1961	256739
1962	251646
1963	247020
1964	242618
1965	237493
1966	234222
1967	232611
1968	231318
1969	230877
1970	230611
1971	230502
1972	230237
1973	227885
1974	224523
1975	221590
1976	217441
1977	212282
1978	207346
1979	202798
1980	196847
1981	188737
1982	180909
1983	173810
1984	165267
1985	156135
1986	147642
1987	140038
1988	133162
1989	126204
1990	119010
1991	112422
1992	107715
1993	102936
1994	96985
1995	91301
1996	86002
1997	81420
1998	77810
1999	74383
2000	70939
2001	68126
2002	65511
2003	63220
2004	61150
2005	59472
2006	58157
2007	57162
2008	56256
2009	55279
2010	55223
2011	55250
2012	55126
2013	55251
2014	54853
2015	53740
2016	50635
2017	47302
2018	45412
2019	43174
2020	41130
2021	39547
2022	38026