Year	Number
1960	24456
1961	26511
1962	28737
1963	31135
1964	33715
1965	36492
1966	39486
1967	41140
1968	42970
1969	44923
1970	46992
1971	49191
1972	51532
1973	54022
1974	56678
1975	59477
1976	62455
1977	65635
1978	69009
1979	72564
1980	76221
1981	79930
1982	83622
1983	87425
1984	91438
1985	95674
1986	100138
1987	104830
1988	109742
1989	114874
1990	120149
1991	125456
1992	128808
1993	131536
1994	134212
1995	136909
1996	139671
1997	142485
1998	145335
1999	148057
2000	150722
2001	153565
2002	156488
2003	159334
2004	162159
2005	165210
2006	168476
2007	171911
2008	175534
2009	179390
2010	183510
2011	187888
2012	192517
2013	197390
2014	202507
2015	207892
2016	213564
2017	219237
2018	224859
2019	230683
2020	236852
2021	243308
2022	249894
2023	256747