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	1304
1993	12163
1994	20985
1995	41221
1996	80902
1997	153635
1998	343977
1999	733698
2000	1948549
2001	4567958
2002	9178087
2003	16037062
2004	29845014
2005	52010747
2006	96341614
2007	145446281
2008	218766995
2009	267860632
2010	326575155
2011	387321728
2012	442017652
2013	503425982
2014	559471203
2015	605173047
2016	600262184
2017	621562273
2018	660871090
2019	725264938
2020	787026391
2021	812732287
2022	783016469