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	1439
1991	1462
1992	1462
1993	1456
1994	1446
1995	11840
1996	24113
1997	45037
1998	82429
1999	118417
2000	388949
2001	865627
2002	1219597
2003	1325313
2004	1624110
2005	3137700
2006	4343100
2007	4771641
2008	5313564
2009	6014366
2010	6620000
2011	7482561
2012	8984252
2013	10313976
2014	11092404
2015	13797968
2016	9818446
2017	9703287
2018	8731760
2019	7778770
2020	6987891
2021	7275563
2022	7625635