Year	Number
1960	1582
1961	1577
1962	1570
1963	1562
1964	1543
1965	1518
1966	1492
1967	1462
1968	1563
1969	1857
1970	2231
1971	2635
1972	3049
1973	3481
1974	3957
1975	4529
1976	4963
1977	5184
1978	5370
1979	5486
1980	5567
1981	5817
1982	6237
1983	6662
1984	7082
1985	7514
1986	7890
1987	8209
1988	8543
1989	8883
1990	9222
1991	9566
1992	9929
1993	10323
1994	10747
1995	11182
1996	11542
1997	11820
1998	12087
1999	12365
2000	12651
2001	12922
2002	13159
2003	13360
2004	13527
2005	13505
2006	12733
2007	11020
2008	8911
2009	7090
2010	8108
2011	11872
2012	16137
2013	20989
2014	26514
2015	32786
2016	39879
2017	47879
2018	56878
2019	66979
2020	73813
2021	77040
2022	79813
2023	82264