Year	Total
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	1010
1991	1800
1992	2644
1993	14687
1994	29182
1995	51316
1996	71029
1997	114888
1998	174202
1999	256655
2000	430202
2001	667662
2002	931403
2003	1393403
2004	2211158
2005	3361775
2006	5412496
2007	7983489
2008	11082454
2009	16305417
2010	17359312
2011	18319447
2012	19332844
2013	20315150
2014	22123000
2015	23899642
2016	25797199
2017	28199083