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	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	1632
1994	4868
1995	13475
1996	23270
1997	40163
1998	137114
1999	511365
2000	743628
2001	857782
2002	888818
2003	1149790
2004	1832579
2005	2411753
2006	3851611
2007	6137381
2008	6950703
2009	7566245
2010	7700336
2011	8316150
2012	8649000
2013	8991899
2014	9193342
2015	9334132
2016	9637259
2017	9478044
2018	9433495
2019	10396786
2020	9949000
2021	11071073
2022	11508619