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
1986	10817
1987	17411
1988	27302
1989	39419
1990	86620
1991	130000
1992	200573
1993	340022
1994	571720
1995	1005066
1996	1520320
1997	2000000
1998	2200000
1999	2990000
2000	5121748
2001	7385000
2002	9053000
2003	11124000
2004	14611000
2005	19545000
2006	19463722
2007	23347000
2008	27713000
2009	30144000
2010	33858700
2011	36661300
2012	41324700
2013	43005000
2014	44928600
2015	44104000
2016	43465000
2017	42338500