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	1058
1997	12362
1998	30087
1999	48733
2000	115748
2001	223275
2002	365346
2003	776000
2004	985600
2005	1131006
2006	1263841
2007	1794433
2008	1967531
2009	1943216
2010	2153425
2011	2213223
2012	2235460
2013	2237250
2014	2224439
2015	2083583
2016	2050494
2017	2008008
2018	1969109
2019	1921013
2020	1862138
2021	1941352
2022	2048236