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	500
1995	6000
1996	17000
1997	40000
1998	65000
1999	370000
2000	420400
2001	730000
2002	794200
2003	1057100
2004	1456523
2005	2242000
2006	3323500
2007	4519000
2008	6548000
2009	7757120
2010	9100113
2011	10120105
2012	10125200
2013	10130102
2014	10552520
2015	10697132
2016	10189000
2017	10127000
2018	10339700
2019	10750300
2020	10344300
2021	10817071
2022	11068100