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	667
1991	6700
1992	32000
1993	182000
1994	574009
1995	1285533
1996	2498154
1997	4550000
1998	7368218
1999	15032698
2000	23188171
2001	28745769
2002	34880964
2003	46373266
2004	65605000
2005	86210336
2006	99918621
2007	120980103
2008	150641403
2009	169385584
2010	196929978
2011	234357507
2012	248323703
2013	271099799
2014	280728796
2015	257814274
2016	244067356
2017	236488548