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	1078
1994	1382
1995	1687
1996	2416
1997	2258
1998	6007
1999	17500
2000	41048
2001	87000
2002	108363
2003	168522
2004	212819
2005	232785
2006	320000
2007	380000
2008	657106
2009	763912
2010	521166
2011	533522
2012	569069
2013	868600
2014	927800
2015	750458
2016	806881
2017	795871
2018	752270
2019	813844
2020	899339
2021	906170
2022	928840