Year	Number
1960	24791
1961	25229
1962	25687
1963	26185
1964	26768
1965	27471
1966	28306
1967	29282
1968	30388
1969	31595
1970	32879
1971	34220
1972	35393
1973	36599
1974	38040
1975	39508
1976	41017
1977	42580
1978	44147
1979	45701
1980	47355
1981	49099
1982	50850
1983	52652
1984	54576
1985	56649
1986	58879
1987	61277
1988	63807
1989	66420
1990	69062
1991	71715
1992	74365
1993	76975
1994	79517
1995	81991
1996	84653
1997	87557
1998	90432
1999	93360
2000	96391
2001	99361
2002	102214
2003	104985
2004	107802
2005	110529
2006	113303
2007	116522
2008	120240
2009	124436
2010	128987
2011	133708
2012	138664
2013	144124
2014	150227
2015	157105
2016	164466
2017	171927
2018	179576
2019	187499
2020	194674
2021	201915
2022	210451
2023	219493