• 1960 to 1960 1
• 1961 to 1961 895
• 1962 to 1962 1,208
• 1963 to 1963 912
• 1964 to 1964 1,218
• 1965 to 1965 1,429
• 1966 to 1966 1,141
• 1967 to 1967 1,473
• 1968 to 1968 1,895
• 1969 to 1969 1,054
• 1970 to 1970 1,122
• 1971 to 1971 458
• 1972 to 1972 365
• 1973 to 1973 46