Year	Number
1960	42020
1961	43391
1962	44814
1963	46365
1964	48047
1965	49818
1966	51686
1967	53633
1968	55634
1969	57610
1970	59288
1971	60555
1972	61719
1973	62818
1974	63887
1975	65177
1976	66719
1977	68290
1978	69890
1979	71568
1980	73475
1981	75597
1982	77741
1983	79898
1984	82081
1985	84302
1986	86558
1987	88846
1988	91174
1989	93538
1990	95923
1991	98320
1992	100746
1993	103209
1994	105881
1995	109055
1996	112865
1997	117237
1998	121915
1999	126649
2000	131266
2001	135510
2002	139861
2003	144283
2004	148772
2005	153329
2006	157946
2007	162616
2008	167318
2009	172024
2010	176424
2011	180495
2012	184553
2013	188606
2014	192604
2015	196468
2016	200204
2017	203829
2018	207370
2019	210633
2020	213159
2021	215213
2022	217242
2023	219348