• 1972 to 1972 1
• 1973 to 1973 0
• 1974 to 1974 0
• 1975 to 1975 0
• 1976 to 1976 0
• 1977 to 1977 2
• 1978 to 1978 1
• 1979 to 1979 2
• 1980 to 1980 0
• 1981 to 1981 0
• 1982 to 1982 1
• 1983 to 1983 1