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	1650
1991	5700
1992	21550
1993	36300
1994	52200
1995	73543
1996	200972
1997	421814
1998	742642
1999	1013314
2000	1273857
2001	1793284
2002	2306943
2003	2930343
2004	4092558
2005	5583356
2006	9120000
2007	15417247
2008	20951834
2009	24700361
2010	29115149
2011	32461415
2012	29388077
2013	29793297
2014	31880043
2015	34235810
2016	36933161
2017	38915386