Year	Number
1960	424029
1961	424136
1962	422738
1963	421158
1964	419351
1965	417359
1966	415160
1967	412699
1968	409943
1969	407854
1970	406091
1971	401897
1972	396827
1973	391147
1974	384934
1975	378296
1976	371261
1977	363915
1978	356174
1979	348030
1980	339467
1981	330629
1982	328688
1983	326629
1984	324399
1985	322020
1986	319467
1987	316756
1988	312524
1989	308072
1990	303333
1991	298332
1992	293089
1993	287666
1994	285203
1995	282769
1996	280125
1997	277372
1998	274559
1999	271703
2000	268857
2001	266113
2002	263402
2003	260752
2004	258226
2005	255912
2006	253823
2007	251962
2008	250253
2009	248775
2010	247546
2011	246519
2012	245494
2013	244322
2014	242887
2015	241028
2016	238683
2017	235937
2018	233011
2019	230087
2020	227148
2021	224215
2022	221340
2023	218584