Year	Number
1960	377043
1961	379613
1962	380649
1963	381387
1964	381603
1965	381593
1966	381645
1967	381576
1968	381204
1969	380551
1970	379606
1971	378380
1972	376870
1973	372483
1974	356676
1975	340054
1976	327270
1977	316109
1978	304638
1979	292970
1980	281146
1981	269309
1982	257855
1983	255951
1984	257270
1985	258438
1986	259448
1987	260301
1988	261002
1989	261574
1990	261971
1991	262188
1992	262596
1993	266034
1994	270940
1995	275646
1996	280202
1997	284651
1998	288987
1999	293202
2000	297291
2001	301326
2002	307486
2003	314580
2004	321802
2005	329081
2006	336421
2007	343833
2008	351324
2009	358900
2010	366572
2011	373229
2012	378645
2013	383501
2014	388043
2015	392444
2016	396726
2017	400795
2018	404530
2019	407912
2020	410602
2021	412374
2022	414105
2023	416009