• 1960 to 1960 33
• 1961 to 1961 34
• 1962 to 1962 38
• 1963 to 1963 36
• 1964 to 1964 39
• 1965 to 1965 41
• 1966 to 1966 40
• 1967 to 1967 37
• 1968 to 1968 37
• 1969 to 1969 37