• 1948 to 1949 1
• 1950 to 1951 2
• 1952 to 1954 1
• 1955 to 1956 0
• 1957 to 1959 1
• 1960 to 1961 0
• 1962 to 1964 0
• 1965 to 1966 2
• 1967 to 1969 2
• 1970 to 1971 0
• 1972 to 1972 1