Year	Number
1960	45594
1961	46414
1962	47339
1963	48570
1964	50096
1965	51742
1966	53473
1967	55298
1968	57234
1969	59302
1970	61507
1971	63886
1972	66549
1973	69464
1974	72510
1975	75678
1976	78978
1977	82455
1978	86031
1979	89705
1980	93565
1981	97594
1982	101753
1983	105521
1984	108994
1985	112594
1986	116126
1987	119553
1988	122872
1989	125943
1990	128744
1991	131447
1992	134137
1993	136791
1994	139468
1995	142370
1996	145590
1997	149140
1998	152897
1999	156786
2000	160841
2001	164924
2002	168943
2003	173068
2004	177181
2005	181137
2006	184818
2007	187726
2008	189948
2009	191741
2010	193133
2011	194381
2012	195489
2013	196546
2014	197937
2015	199610
2016	201214
2017	202855
2018	204460
2019	205826
2020	207250
2021	208758
2022	210302
2023	211962