Year	Total
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	7200
1983	16100
1984	30600
1985	46100
1986	57604
1987	77432
1988	101479
1989	123792
1990	148220
1991	175943
1992	211063
1993	357589
1994	503500
1995	822264
1996	1316592
1997	1444016
1998	1931101
1999	2628585
2000	3363552
2001	3960165
2002	4477752
2003	4767100
2004	5166912
2005	5449206
2006	5828157
2007	6308000
2008	6556988
2009	6833683
2010	6420790
2011	7173185
2012	7292756
2013	7031152
2014	7160233
2015	7079249
2016	6985035
2017	6978348