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	7000
1997	23474
1998	85883
1999	232888
2000	410401
2001	475141
2002	525845
2003	692406
2004	1259948
2005	1748740
2006	2174451
2007	3010635
2008	3915246
2009	6066683
2010	6646348
2011	6735429
2012	6213564
2013	6204636
2014	6906090
2015	5741929
2016	5141768
2017	5280195
2018	5722370
2019	5825677
2020	6108584
2021	6426848
2022	6890901