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	0
1985	0
1986	0
1987	2911
1988	3527
1989	4955
1990	10306
1991	53896
1992	88145
1993	177345
1994	307635
1995	928284
1996	1934378
1997	3577894
1998	5164820
1999	8944706
2000	19794994
2001	37313075
2002	57707978
2003	97591692
2004	153057251
2005	246442774
2006	423067490
2007	636900450
2008	913322195
2009	1213813231
2010	1565078436
2011	1833860378
2012	1910855696
2013	2005163887
2014	2155790149
2015	2257688619
2016	2428876762
2017	2509282939
2018	2626414126
2019	2713777846
2020	2761542041
2021	2804931541
2022	2723383291