Year	Annual Number
1970	0
1971	0
1972	0
1973	4800000
1974	0
1975	0
1976	5566000
1977	1023000
1978	2246000
1979	3213
1980	86280
1981	82
1982	10070
1983	64340
1984	2039
1985	0
1986	0
1987	0
1988	1000000
1989	142400
1990	0
1991	24
1992	12840000
1993	261300
1994	840300
1995	1256000
1996	1300000
1997	851600
1998	201000
1999	1077
2000	0
2001	400400
2002	4047
2003	1267000
2004	5
2005	7528000
2006	8525
2007	3232
2008	290800