Year	Total
1960	0
1961	0
1962	0
1963	27770
1964	206400
1965	301800
1966	332200
1967	271000
1968	221500
1969	144400
1970	273100
1971	289300
1972	311800
1973	270200
1974	293200
1975	326700
1976	327300
1977	291100
1978	380700
1979	226000
1980	189900
1981	232800
1982	585000
1983	497200
1984	592200
1985	604000
1986	753100
1987	14960
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0