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	0
1997	0
1998	0
1999	0
2000	80000
2001	85000
2002	100000
2003	200000
2004	500000
2005	500000
2006	550000
2007	600000
2008	627000
2009	641000
2010	648200
2011	1800000
2012	2300000
2013	5183000
2014	5500000
2015	5836000
2016	6653040
2017	7119000
2018	7653040
2019	8227000
2020	8844000
2021	8844000
2022	8844000