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	340158
1991	705413
1992	1432067
1993	2835395
1994	5984026
1995	11985362
1996	21508587
1997	39861478
1998	66102121
1999	121177567
2000	221797693
2001	350829979
2002	494816147
2003	680260909
2004	955275884
2005	1322622839
2006	1780991543
2007	2310002689
2008	2913782703
2009	3480735716
2010	4114000888
2011	4660047828
2012	4998423319
2013	5372097654
2014	5652030807
2015	5800780461
2016	6100481830
2017	6334392055
2018	6470390565
2019	6803570134
2020	6855486391
2021	7047608861
2022	6889075559