Year	Number
1962	41446
1963	41262
1964	41184
1965	41099
1966	41063
1967	41004
1968	40815
1969	40608
1970	40317
1971	39973
1972	39582
1973	39166
1974	38752
1975	38325
1976	44465
1977	37208
1978	36681
1979	36143
1980	35616
1981	35054
1982	41293
1983	33479
1984	32536
1985	31453
1986	30558
1987	29828
1988	29214
1989	28588
1990	27835
1991	27028
1992	26311
1993	25643
1994	24978
1995	24323
1996	23623
1997	22911
1998	22250
1999	21532
2000	20828
2001	20238
2002	19539
2003	18726
2004	17927
2005	17131
2006	16345
2007	15679
2008	15032
2009	14393
2010	13847
2011	13357
2012	12903
2013	12423
2014	11980
2015	11614
2016	11282
2017	10859
2018	10347
2019	9784
2020	9180
2021	8644
2022	8259