Year	Number
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	13275
1982	19804
1983	27198
1984	43142
1985	68229
1986	128390
1987	226225
1988	424070
1989	909037
1990	1646510
1991	2745300
1992	4057172
1993	6029736
1994	11252989
1995	24600037
1996	49285027
1997	74880635
1998	107364780
1999	159909704
2000	234862417
2001	328614799
2002	425643649
2003	522343745
2004	630000386
2005	730403034
2006	852804655
2007	1045698767
2008	1252372740
2009	1435263562
2010	1642135588
2011	1868450149
2012	2071652537
2013	2238091300
2014	2371023551
2015	2403227088
2016	2561912758
2017	2722439917
2018	2848763511
2019	3043085409
2020	3007776380
2021	3048260686
2022	3041651846