Year	Number
1960	82122
1961	81610
1962	81057
1963	80510
1964	80059
1965	79750
1966	79585
1967	79571
1968	79704
1969	80009
1970	80506
1971	81186
1972	82031
1973	83056
1974	84288
1975	85658
1976	87178
1977	88906
1978	90756
1979	92599
1980	94376
1981	96107
1982	97779
1983	99425
1984	101201
1985	103199
1986	105369
1987	107682
1988	110222
1989	113087
1990	116272
1991	119785
1992	123651
1993	132058
1994	144319
1995	155516
1996	165674
1997	174929
1998	183340
1999	190883
2000	197730
2001	201137
2002	201557
2003	202340
2004	203569
2005	205289
2006	207431
2007	209991
2008	212997
2009	216512
2010	220495
2011	224864
2012	229358
2013	233521
2014	237216
2015	240955
2016	245121
2017	249627
2018	254516
2019	259862
2020	261350
2021	258012
2022	255443
2023	259430