Year	Number
1960	54122
1961	54672
1962	55196
1963	55667
1964	56120
1965	56730
1966	57508
1967	58485
1968	59699
1969	61047
1970	62521
1971	64110
1972	65804
1973	67589
1974	69462
1975	71387
1976	73389
1977	75490
1978	77656
1979	79900
1980	82220
1981	84507
1982	86619
1983	88694
1984	90921
1985	93319
1986	95895
1987	98650
1988	101576
1989	104680
1990	107848
1991	110926
1992	113823
1993	116582
1994	119420
1995	122476
1996	125761
1997	129266
1998	132971
1999	136176
2000	138866
2001	141742
2002	144787
2003	148433
2004	152520
2005	156535
2006	160605
2007	164789
2008	169193
2009	173903
2010	178903
2011	184117
2012	189460
2013	194848
2014	200225
2015	205582
2016	210956
2017	215868
2018	220251
2019	224671
2020	229531
2021	234763
2022	240006
2023	245320