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	295
1992	2996
1993	6606
1994	15197
1995	43020
1996	115494
1997	288202
1998	653789
1999	1319083
2000	2870156
2001	5296669
2002	8557919
2003	14370505
2004	22563846
2005	34661619
2006	59063690
2007	96948361
2008	147770799
2009	189207562
2010	232417840
2011	289409947
2012	336857124
2013	387805616
2014	436363108
2015	483957049
2016	487123787
2017	501846294
2018	468724195
2019	555057907
2020	594454841
2021	641430509
2022	550042811