Rank Participants Change Score
- 1957 ? 59.13 Score
- 1958 ? 59.1 Score
- 1959 ? 59.1 Score
- 1960 ? 59.09 Score
- 1961 ? 59.07 Score
- 1962 ? 59.06 Score
- 1963 ? 59.04 Score
- 1964 ? 59.04 Score
- 1965 ? 59.01 Score
- 1966 ? 58.99 Score
- 1967 ? 58.98 Score
- 1968 ? 58.98 Score