2000 1
2000 0
1998 1
1997 0
1996 2
1995 1
1991 0
1990 1
1989 0
1986 0
1986 2
1985 2
1984 1
1982 1
1981 1
1980 1
1977 1
1975 1
1974 1
1974 2
1972 3