Year	Number
1960	258774
1961	261709
1962	264896
1963	268317
1964	272766
1965	274992
1966	274005
1967	272907
1968	271888
1969	271175
1970	271641
1971	276573
1972	289032
1973	307401
1974	328157
1975	349897
1976	372566
1977	396143
1978	420658
1979	446041
1980	471768
1981	496427
1982	517712
1983	536885
1984	556582
1985	576937
1986	597903
1987	619501
1988	641956
1989	665534
1990	690293
1991	716146
1992	744282
1993	774697
1994	805803
1995	837313
1996	869357
1997	901605
1998	933544
1999	965072
2000	996249
2001	1026961
2002	1056697
2003	1085463
2004	1113887
2005	1142326
2006	1171271
2007	1201411
2008	1232906
2009	1265019
2010	1296818
2011	1326859
2012	1354844
2013	1382815
2014	1411719
2015	1442111
2016	1474947
2017	1509630
2018	1544215
2019	1577834
2020	1611382
2021	1643461
2022	1676627
2023	1712687