Year	Number
1960	680177
1961	697504
1962	713703
1963	730343
1964	749229
1965	768222
1966	785365
1967	801978
1968	817775
1969	832047
1970	845001
1971	855368
1972	863093
1973	868801
1974	872465
1975	873057
1976	871276
1977	870377
1978	869889
1979	868652
1980	867557
1981	867164
1982	867268
1983	868629
1984	870694
1985	872067
1986	872209
1987	871162
1988	869823
1989	868934
1990	867901
1991	868000
1992	872378
1993	879310
1994	885648
1995	890452
1996	891853
1997	890463
1998	887752
1999	882399
2000	872661
2001	859941
2002	846744
2003	833532
2004	820743
2005	808773
2006	796758
2007	781816
2008	764206
2009	746239
2010	727430
2011	709824
2012	694051
2013	677989
2014	662489
2015	650355
2016	640310
2017	628809
2018	615717
2019	601419
2020	587587
2021	574011
2022	560945
2023	548920