Year	Number
1960	29199
1961	29906
1962	30670
1963	31520
1964	32488
1965	33594
1966	34850
1967	36244
1968	40071
1969	46264
1970	51972
1971	57003
1972	61864
1973	66911
1974	72400
1975	78440
1976	86944
1977	98442
1978	111895
1979	127643
1980	145036
1981	161454
1982	176343
1983	191289
1984	206348
1985	221241
1986	239447
1987	258516
1988	273049
1989	284375
1990	293603
1991	301635
1992	309107
1993	316252
1994	322836
1995	328553
1996	342239
1997	359622
1998	369254
1999	374380
2000	377790
2001	381719
2002	387538
2003	395599
2004	405364
2005	423233
2006	456700
2007	502291
2008	550904
2009	593042
2010	628241
2011	655351
2012	669789
2013	673573
2014	670407
2015	665344
2016	663427
2017	667825
2018	679251
2019	696098
2020	716178
2021	733912
2022	744515
2023	748898