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	426
1992	1277
1993	1679
1994	2599
1995	6353
1996	9534
1997	17140
1998	26307
1999	38659
2000	161860
2001	256106
2002	262772
2003	336352
2004	651189
2005	924100
2006	1518800
2007	1509800
2008	1806120
2009	1846345
2010	1894240
2011	1826200
2012	1883683
2013	1943873
2014	1980566
2015	2123374
2016	2165847
2017	2030637
2018	1972595
2019	2163725
2020	1987996
2021	1996837
2022	1999029