Year	Number
1960	696345
1961	706719
1962	716932
1963	727411
1964	738024
1965	747686
1966	756074
1967	763040
1968	768442
1969	772186
1970	774148
1971	775470
1972	777192
1973	779221
1974	782381
1975	787082
1976	792569
1977	797191
1978	799982
1979	801349
1980	801209
1981	800480
1982	800272
1983	800385
1984	800681
1985	801853
1986	803251
1987	803259
1988	803074
1989	802713
1990	799985
1991	796051
1992	793156
1993	791423
1994	791366
1995	793596
1996	796630
1997	799401
1998	801501
1999	802518
2000	801969
2001	799698
2002	797115
2003	793168
2004	787129
2005	781435
2006	775903
2007	769628
2008	763098
2009	755933
2010	748144
2011	740547
2012	733574
2013	727724
2014	722949
2015	719410
2016	716255
2017	710709
2018	702227
2019	691500
2020	678850
2021	665952
2022	653693
2023	641702