Year	Number
1960	12233
1961	12916
1962	13798
1963	14270
1964	14561
1965	14951
1966	15419
1967	15912
1968	16389
1969	16865
1970	17380
1971	17965
1972	18527
1973	18983
1974	19462
1975	20061
1976	20745
1977	21516
1978	22332
1979	23352
1980	24366
1981	25262
1982	26052
1983	26708
1984	27310
1985	27893
1986	28595
1987	29396
1988	30321
1989	31462
1990	32730
1991	34066
1992	35290
1993	36303
1994	37307
1995	38055
1996	38755
1997	39504
1998	40311
1999	41374
2000	42387
2001	43481
2002	44668
2003	45844
2004	46981
2005	48118
2006	49195
2007	50341
2008	51714
2009	53437
2010	55365
2011	57255
2012	59310
2013	61696
2014	64510
2015	67722
2016	71141
2017	74563
2018	77875
2019	81115
2020	84458
2021	87903
2022	91002
2023	94414