Year	Annual Number
1970	104500
1971	13240
1972	0
1973	20
1974	325200
1975	828100
1976	0
1977	131100
1978	1026
1979	1500000
1980	271100
1981	52400
1982	0
1983	3338000
1984	391800
1985	612100
1986	8363
1987	10610
1988	3072000
1989	1034000
1990	2824
1991	17020
1992	147600
1993	0
1994	0
1995	33910
1996	7015
1997	62290
1998	47510
1999	7
2000	87050
2001	11130
2002	3517
2003	206200
2004	5289
2005	41050
2006	116000
2007	206400
2008	1791000