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	0
1994	0
1995	0
1996	0
1997	0
1998	5000
1999	11000
2000	39000
2001	65000
2002	82391
2003	130720
2004	137271
2005	222978
2006	314201
2007	635137
2008	1322637
2009	2429252
2010	3548761
2011	4446194
2012	5690751
2013	6689158
2014	7747019
2015	8759619
2016	8921533
2017	8819217
2018	9700609
2019	9658548
2020	10614408
2021	10902989
2022	11002078