Year	Number
1960	635465
1961	651153
1962	664152
1963	674135
1964	681567
1965	686660
1966	689293
1967	689211
1968	686428
1969	681674
1970	675736
1971	669383
1972	663070
1973	656269
1974	648420
1975	639728
1976	630389
1977	620526
1978	610445
1979	600668
1980	591932
1981	585298
1982	581033
1983	578299
1984	576042
1985	573408
1986	569947
1987	565625
1988	560752
1989	555204
1990	548671
1991	541721
1992	523292
1993	498318
1994	478705
1995	465760
1996	460414
1997	454754
1998	445603
1999	433760
2000	420544
2001	406974
2002	393463
2003	379847
2004	365745
2005	352320
2006	340324
2007	330076
2008	323022
2009	317600
2010	311339
2011	303223
2012	293724
2013	284701
2014	277457
2015	271847
2016	267308
2017	263445
2018	260016
2019	256675
2020	253172
2021	249513
2022	246012
2023	242419