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	73773
1989	146000
1990	336998
1991	694966
1992	1411037
1993	2777822
1994	5877826
1995	11802849
1996	21200600
1997	39289224
1998	65029415
1999	119106009
2000	217600506
2001	342079615
2002	478317246
2003	652947217
2004	905155016
2005	1230423155
2006	1604886987
2007	2026240314
2008	2497464429
2009	2971898912
2010	3497930994
2011	3928041534
2012	4162039539
2013	4425989568
2014	4596356004
2015	4668421015
2016	4925937086
2017	5121141822
2018	5218505323
2019	5399639850
2020	5369125670
2021	5503679455
2022	5508645881