Year	Number
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	23482
1981	63585
1982	99179
1983	145291
1984	311566
1985	736224
1986	1403211
1987	2449186
1988	4158634
1989	7014331
1990	10599076
1991	15176159
1992	21285090
1993	30567965
1994	48721918
1995	77802847
1996	122531294
1997	174750900
1998	252024886
1999	372803396
2000	527123864
2001	630317657
2002	696373330
2003	770452081
2004	866050092
2005	973051912
2006	1078695366
2007	1187184179
2008	1253377845
2009	1285233371
2010	1313588702
2011	1367828242
2012	1412427128
2013	1445975626
2014	1472334117
2015	1489848258.01
2016	1516879000
2017	1540756262
2018	1570880225
2019	1595001421
2020	1601224986
2021	1644082657
2022	1686442871