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	9762
1986	19104
1987	26223
1988	36904
1989	50721
1990	73698
1991	115402
1992	172453
1993	220859
1994	278199
1995	383535
1996	598708
1997	1159700
1998	2292900
1999	4250393
2000	6117000
2001	6541000
2002	6736000
2003	7274000
2004	7992000
2005	8665000
2006	9281000
2007	9912000
2008	10816000
2009	11434000
2010	12241000
2011	13022578
2012	13588000
2013	13272000
2014	12952605
2015	13470623
2016	14270000
2017	14924340