Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

1950

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1951

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1952

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1953

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1954

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1955

YES

YES

YES

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1956

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

YES

1957

YES

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

YES

1958

YES

N/A

N/A

YES

YES

N/A

YES

YES

YES

YES

N/A

YES

1959

YES

YES

YES

YES

YES

YES

N/A

YES

YES

YES

N/A

YES