1964 6.9

1964 7.7

1964 7.0

1964 6.6

1964 6.7

1963 7.3

1963 8.2

1962 7.2

1962 8.3

1962 6.5

1962 6.5

1962 6.9

1961 7.3

1961 6.9

1960 7.9

1959 8.1

1958 7.0

1955 7.3

1954 7.2

1953 8.1