Year	Number
1960	49618
1961	49988
1962	50353
1963	50683
1964	51069
1965	51512
1966	52066
1967	52711
1968	53490
1969	54397
1970	55301
1971	56308
1972	57401
1973	58569
1974	59881
1975	60958
1976	67579
1977	74576
1978	68543
1979	61949
1980	62237
1981	62103
1982	60329
1983	58300
1984	57766
1985	57872
1986	58772
1987	60112
1988	61515
1989	63356
1990	65505
1991	68150
1992	71320
1993	74565
1994	77811
1995	81166
1996	84626
1997	88034
1998	91333
1999	94563
2000	97693
2001	100674
2002	103349
2003	106050
2004	108932
2005	111614
2006	114394
2007	117480
2008	120524
2009	123525
2010	126346
2011	129689
2012	135770
2013	152467
2014	173071
2015	187670
2016	200644
2017	212294
2018	221904
2019	229053
2020	234222
2021	237020
2022	237629
2023	239282