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	382
1996	3700
1997	7000
1998	10500
1999	22500
2000	49000
2001	55730
2002	86047
2003	135114
2004	222135
2005	421163
2006	620163
2007	1050852
2008	1507684
2009	2485646
2010	3117364
2011	3951572
2012	4646894
2013	5290044
2014	5632514
2015	6566707
2016	7178384
2017	7772503
2018	7076906
2019	8901027
2020	10004680
2021	11940135
2022	12269158