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	324
1994	1724
1995	5897
1996	6548
1997	8167
1998	12155
1999	23457
2000	49353
2001	138329
2002	462630
2003	1118000
2004	2239287
2005	4099500
2006	5960000
2007	6960000
2008	8128000
2009	9686200
2010	10332900
2011	10694900
2012	10676471
2013	11114440
2014	11401927
2015	11448281
2016	11439866
2017	11415141
2018	11619651
2019	11627249
2020	11704084
2021	11760087
2022	11770639