Year	Number
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	1750
1985	2029
1986	16534
1987	38326
1988	71973
1989	137429
1990	318575
1991	649446
1992	1270162
1993	2519841
1994	5438770
1995	11106321
1996	19955546
1997	36540465
1998	59219505
1999	107169333
2000	197580702
2001	313090904
2002	439202298
2003	597737034
2004	820483046
2005	1123328335
2006	1527766477
2007	2016940276
2008	2580033533
2009	3110381850
2010	3731902928
2011	4306631119
2012	4635333402
2013	4997129861
2014	5275934829
2015	5425692763
2016	5728709722
2017	5972478868
2018	6108369041
2019	6437139016
2020	6493342176
2021	6674046518
2022	6508995583