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	15190
1999	92000
2000	222190
2001	332264
2002	332264
2003	444978
2004	522840
2005	563782
2006	823070
2007	1151761
2008	1485791
2009	1874101
2010	2363411
2011	2900263
2012	3081726
2013	3246787
2014	3410507
2015	3475327
2016	3288986
2017	3240589
2018	3381228
2019	3746760
2020	3829408
2021	4160553
2022	4348010