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	1268408
1993	2513861
1994	5429089
1995	11084092
1996	19920896
1997	36482759
1998	59096397
1999	106927179
2000	196920305
2001	311324614
2002	435759501
2003	590599330
2004	807879736
2005	1104279690
2006	1495349334
2007	1963363700
2008	2497298596
2009	3004037738
2010	3594264103
2011	4128141336
2012	4425700699
2013	4747871421
2014	4987735904
2015	5113892117
2016	5419664853
2017	5655646669
2018	5838808836
2019	6091502945
2020	6122236354
2021	6266240623
2022	6197601507