Month Percentage 1946-01-01 40.0000 1946-02-01 33.0000 1946-03-01 38.0000 1946-04-01 32.0000 1946-05-01 36.0000 1946-06-01 40.0000 1946-07-01 44.0000 1946-08-01 48.0000 1946-09-01 48.0000 1946-10-01 54.0000 1946-11-01 48.0000 1946-12-01 54.0000 1947-01-01 50.0000 1947-02-01 52.0000 1947-03-01 54.0000 1947-04-01 48.0000 1947-05-01 42.0000 1947-06-01 52.0000 1947-07-01 48.0000 1947-08-01 56.0000 1947-09-01 46.0000 1947-10-01 40.0000 1947-11-01 46.0000 1947-12-01 48.0000 1948-01-01 46.0000 1948-02-01 46.0000 1948-03-01 40.0000 1948-04-01 42.0000 1948-05-01 50.0000 1948-06-01 49.0000 1948-07-01 48.0000 1948-08-01 47.0000 1948-09-01 40.0000 1948-10-01 46.0000 1948-11-01 44.0000 1948-12-01 42.0000 1949-01-01 36.0000 1949-02-01 38.0000 1949-03-01 30.0000 1949-04-01 25.0000 1949-05-01 24.0000 1949-06-01 22.0000 1949-07-01 29.0000 1949-08-01 39.0000 1949-09-01 46.0000 1949-10-01 40.0000 1949-11-01 44.0000 1949-12-01 44.0000 1950-01-01 49.0000 1950-02-01 49.0000 1950-03-01 56.0000 1950-04-01 59.0000 1950-05-01 58.0000 1950-06-01 60.0000 1950-07-01 59.0000 1950-08-01 51.0000 1950-09-01 42.0000 1950-10-01 36.0000 1950-11-01 44.0000 1950-12-01 40.0000 1951-01-01 38.0000 1951-02-01 43.0000 1951-03-01 52.0000 1951-04-01 55.0000 1951-05-01 52.0000 1951-06-01 57.0000 1951-07-01 57.0000 1951-08-01 48.0000 1951-09-01 47.0000 1951-10-01 42.0000 1951-11-01 44.0000 1951-12-01 49.0000 1952-01-01 49.0000 1952-02-01 46.0000 1952-03-01 45.0000 1952-04-01 45.0000 1952-05-01 44.0000 1952-06-01 34.0000 1952-07-01 31.0000 1952-08-01 38.0000 1952-09-01 46.0000 1952-10-01 48.0000 1952-11-01 49.0000 1952-12-01 52.0000 1953-01-01 56.0000 1953-02-01 55.0000 1953-03-01 53.0000 1953-04-01 51.0000 1953-05-01 53.0000 1953-06-01 56.0000 1953-07-01 50.0000 1953-08-01 45.0000 1953-09-01 45.0000 1953-10-01 40.0000 1953-11-01 39.0000 1953-12-01 41.0000 1954-01-01 35.0000 1954-02-01 36.0000 1954-03-01 36.0000 1954-04-01 30.0000 1954-05-01 37.0000 1954-06-01 41.0000 1954-07-01 42.0000 1954-08-01 38.0000 1954-09-01 46.0000 1954-10-01 55.0000 1954-11-01 49.0000 1954-12-01 47.0000 1955-01-01 55.0000 1955-02-01 60.0000 1955-03-01 65.0000 1955-04-01 61.0000 1955-05-01 65.0000 1955-06-01 60.0000 1955-07-01 58.0000 1955-08-01 58.0000 1955-09-01 60.0000 1955-10-01 60.0000 1955-11-01 56.0000 1955-12-01 59.0000 1956-01-01 65.0000 1956-02-01 62.0000 1956-03-01 64.0000 1956-04-01 66.0000 1956-05-01 59.0000 1956-06-01 56.0000 1956-07-01 42.0000 1956-08-01 46.0000 1956-09-01 56.0000 1956-10-01 55.0000 1956-11-01 49.0000 1956-12-01 48.0000 1957-01-01 55.0000 1957-02-01 51.0000 1957-03-01 45.0000 1957-04-01 43.0000 1957-05-01 45.0000 1957-06-01 43.0000 1957-07-01 42.0000 1957-08-01 44.0000 1957-09-01 40.0000 1957-10-01 41.0000 1957-11-01 40.0000 1957-12-01 36.0000 1958-01-01 35.0000 1958-02-01 35.0000 1958-03-01 35.0000 1958-04-01 38.0000 1958-05-01 40.0000 1958-06-01 39.0000 1958-07-01 41.0000 1958-08-01 47.0000 1958-09-01 47.0000 1958-10-01 57.0000 1958-11-01 57.0000 1958-12-01 55.0000 1959-01-01 64.0000 1959-02-01 66.0000 1959-03-01 71.0000 1959-04-01 68.0000 1959-05-01 67.0000 1959-06-01 68.0000 1959-07-01 63.0000 1959-08-01 53.0000 1959-09-01 40.0000 1959-10-01 38.0000 1959-11-01 47.0000 1959-12-01 57.0000 1960-01-01 62.0000 1960-02-01 82.0000 1960-03-01 57.0000 1960-04-01 52.0000 1960-05-01 52.0000 1960-06-01 44.0000 1960-07-01 39.0000 1960-08-01 39.0000 1960-09-01 40.0000 1960-10-01 34.0000 1960-11-01 36.0000 1960-12-01 38.0000 1961-01-01 38.0000 1961-02-01 38.0000 1961-03-01 44.0000 1961-04-01 48.0000 1961-05-01 56.0000 1961-06-01 54.0000 1961-07-01 53.0000 1961-08-01 57.0000 1961-09-01 57.0000 1961-10-01 54.0000 1961-11-01 55.0000 1961-12-01 55.0000 1962-01-01 67.0000 1962-02-01 67.0000 1962-03-01 72.0000 1962-04-01 62.0000 1962-05-01 53.0000 1962-06-01 51.0000 1962-07-01 44.0000 1962-08-01 40.0000 1962-09-01 46.0000 1962-10-01 46.0000