• 1960 to 1961 81
• 1962 to 1963 85
• 1964 to 1965 94
• 1966 to 1967 91
• 1968 to 1969 92
• 1970 to 1971 100
• 1972 to 1973 113
• 1974 to 1975 133
• 1976 to 1977 153
• 1978 to 1979 158