Month Percentage 1950-01-01 26.0000 1950-02-01 22.0000 1950-03-01 26.0000 1950-04-01 25.0000 1950-05-01 31.0000 1950-06-01 39.0000 1950-07-01 80.0000 1950-08-01 64.0000 1950-09-01 64.0000 1950-10-01 65.0000 1950-11-01 65.0000 1950-12-01 66.0000 1951-01-01 62.0000 1951-02-01 71.0000 1951-03-01 62.0000 1951-04-01 60.0000 1951-05-01 54.0000 1951-06-01 46.0000 1951-08-01 47.0000 1951-09-01 49.0000 1951-10-01 51.0000 1951-11-01 44.0000 1951-12-01 44.0000 1952-01-01 41.0000 1952-02-01 38.0000 1952-03-01 39.0000 1952-04-01 30.0000 1952-05-01 27.0000 1952-06-01 26.0000 1952-08-01 30.0000 1952-09-01 25.0000 1952-10-01 31.0000 1952-11-01 32.0000 1952-12-01 34.0000 1953-01-01 31.0000 1953-02-01 33.0000 1953-03-01 32.0000 1953-04-01 28.0000 1953-05-01 32.0000 1953-06-01 26.0000 1953-08-01 26.0000 1953-09-01 25.0000 1953-10-01 22.0000 1953-11-01 18.0000 1953-12-01 20.0000 1954-01-01 14.0000 1954-02-01 15.0000 1954-03-01 15.0000 1954-04-01 13.0000 1954-05-01 12.0000 1954-06-01 14.0000 1954-08-01 18.0000 1954-09-01 21.0000 1954-10-01 20.0000 1954-11-01 18.0000 1954-12-01 23.0000 1955-01-01 7.00000 1955-02-01 24.0000 1955-03-01 23.0000 1955-04-01 43.0000 1955-05-01 39.0000 1955-06-01 40.0000 1955-08-01 42.0000 1955-09-01 45.0000 1955-10-01 45.0000 1955-11-01 47.0000 1955-12-01 50.0000 1956-01-01 44.0000 1956-02-01 36.0000 1956-03-01 38.0000 1956-04-01 36.0000 1956-05-01 36.0000 1956-06-01 36.0000 1956-08-01 41.0000 1956-09-01 40.0000 1956-10-01 35.0000 1956-11-01 35.0000 1956-12-01 32.0000 1957-01-01 34.0000 1957-02-01 30.0000 1957-03-01 26.0000 1957-04-01 22.0000 1957-05-01 20.0000 1957-06-01 25.0000 1957-10-01 24.0000 1957-11-01 23.0000 1957-12-01 15.0000 1958-01-01 12.0000 1958-02-01 12.0000 1958-03-01 11.0000 1958-04-01 9.00000 1958-05-01 9.00000 1958-06-01 10.0000 1958-07-01 13.0000 1958-08-01 12.0000 1958-09-01 14.0000 1958-10-01 18.0000 1958-11-01 23.0000 1958-12-01 25.0000 1959-01-01 25.0000 1959-02-01 27.0000 1959-03-01 36.0000 1959-04-01 34.0000 1959-05-01 36.0000 1959-06-01 34.0000 1959-07-01 34.0000 1959-08-01 32.0000 1959-09-01 35.0000 1959-10-01 35.0000 1959-11-01 32.0000 1959-12-01 30.0000 1960-01-01 34.0000 1960-02-01 32.0000 1960-03-01 28.0000 1960-04-01 21.0000 1960-05-01 21.0000 1960-06-01 20.0000 1960-07-01 16.0000 1960-08-01 16.0000