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	110
1997	203
1998	220
1999	280
2000	230
2001	3000
2002	15000
2003	23000
2004	34482
2005	44053
2006	44817
2007	69539
2008	112848
2009	128776
2010	165613
2011	193049
2012	212468
2013	244123
2014	287049
2015	314350
2016	345246
2017	373052
2018	395037
2019	413866
2020	434035
2021	489339
2022	519258