Year	Number
1960	7697
1961	8259
1962	8865
1963	9518
1964	10220
1965	10976
1966	11786
1967	12658
1968	13597
1969	14600
1970	15412
1971	15879
1972	16367
1973	16890
1974	17453
1975	18054
1976	18920
1977	20214
1978	21610
1979	23109
1980	24713
1981	26424
1982	28248
1983	30190
1984	32259
1985	34459
1986	36781
1987	38787
1988	40576
1989	42422
1990	44337
1991	46319
1992	48372
1993	50500
1994	52715
1995	55018
1996	57405
1997	59859
1998	62385
1999	64964
2000	67992
2001	71348
2002	74813
2003	78411
2004	82152
2005	86037
2006	90095
2007	94333
2008	98752
2009	103397
2010	108338
2011	113557
2012	119060
2013	124818
2014	130801
2015	136991
2016	143352
2017	149877
2018	156565
2019	163416
2020	170517
2021	177869
2022	185298
2023	192784