Year	Number
1960	145494
1961	152314
1962	159424
1963	166102
1964	172510
1965	179192
1966	185684
1967	192306
1968	199072
1969	205709
1970	212565
1971	219812
1972	227349
1973	235643
1974	244567
1975	254444
1976	264340
1977	274555
1978	285921
1979	296700
1980	307198
1981	318607
1982	330748
1983	342791
1984	355281
1985	369014
1986	383771
1987	399664
1988	416941
1989	436278
1990	457575
1991	481113
1992	506828
1993	533065
1994	559091
1995	584348
1996	608504
1997	632539
1998	655850
1999	678249
2000	701994
2001	726421
2002	750653
2003	774486
2004	797783
2005	821420
2006	845145
2007	868102
2008	891917
2009	917934
2010	944338
2011	972189
2012	1002387
2013	1035481
2014	1071159
2015	1108999
2016	1149781
2017	1192041
2018	1235494
2019	1280530
2020	1323816
2021	1365255
2022	1407807
2023	1454561