Year	Number
1960	59807
1961	61357
1962	62996
1963	64713
1964	66504
1965	68389
1966	70358
1967	72394
1968	74521
1969	76748
1970	79041
1971	81791
1972	85000
1973	88250
1974	91620
1975	94998
1976	98312
1977	101675
1978	105092
1979	108540
1980	112008
1981	115499
1982	119003
1983	122528
1984	126046
1985	129503
1986	132942
1987	136399
1988	139841
1989	143313
1990	146867
1991	150461
1992	154045
1993	157660
1994	161363
1995	165172
1996	169028
1997	172844
1998	176636
1999	180329
2000	183968
2001	187617
2002	191231
2003	194870
2004	198537
2005	202253
2006	206113
2007	210102
2008	214116
2009	218223
2010	222559
2011	227215
2012	232231
2013	237490
2014	242831
2015	248165
2016	253431
2017	258578
2018	263599
2019	268533
2020	273518
2021	278450
2022	283259
2023	287957