Year	Number
1960	84851
1961	86921
1962	89208
1963	91963
1964	95192
1965	98674
1966	102281
1967	105995
1968	109832
1969	113803
1970	117891
1971	122108
1972	126457
1973	130883
1974	135349
1975	139833
1976	144356
1977	149007
1978	153745
1979	158563
1980	163591
1981	168892
1982	174343
1983	179042
1984	183146
1985	187578
1986	192196
1987	196856
1988	201740
1989	206571
1990	211089
1991	215444
1992	219621
1993	223714
1994	227682
1995	231446
1996	235189
1997	239036
1998	242882
1999	246821
2000	250927
2001	255049
2002	259137
2003	263173
2004	267132
2005	271060
2006	274901
2007	278178
2008	280558
2009	282283
2010	283788
2011	285265
2012	286584
2013	288032
2014	289873
2015	291787
2016	293541
2017	295450
2018	297606
2019	299717
2020	301920
2021	304032
2022	306279
2023	308872