Month Percentage 1947-01-01 46.0000 1947-02-01 52.0000 1947-03-01 50.0000 1947-04-01 42.0000 1947-05-01 33.0000 1947-06-01 34.0000 1947-08-01 38.0000 1947-09-01 40.0000 1947-10-01 47.0000 1947-11-01 51.0000 1947-12-01 50.0000 1948-01-01 49.0000 1948-02-01 44.0000 1948-03-01 45.0000 1948-04-01 42.0000 1948-05-01 46.0000 1948-06-01 54.0000 1948-08-01 47.0000 1948-09-01 44.0000 1948-10-01 44.0000 1948-11-01 46.0000 1948-12-01 36.0000 1949-01-01 40.0000 1949-02-01 35.0000 1949-03-01 34.0000 1949-04-01 26.0000 1949-05-01 25.0000 1949-06-01 24.0000 1949-07-01 22.0000 1949-08-01 27.0000 1949-09-01 35.0000 1949-10-01 39.0000 1949-11-01 34.0000 1949-12-01 40.0000 1950-01-01 46.0000 1950-02-01 46.0000 1950-03-01 50.0000 1950-04-01 48.0000 1950-05-01 58.0000 1950-06-01 60.0000 1950-07-01 63.0000 1950-08-01 63.0000 1950-09-01 54.0000 1950-10-01 49.0000 1950-11-01 52.0000 1950-12-01 49.0000 1951-01-01 50.0000 1951-02-01 42.0000 1951-03-01 48.0000 1951-04-01 50.0000 1951-05-01 50.0000 1951-06-01 45.0000 1951-08-01 46.0000 1951-09-01 45.0000 1951-10-01 42.0000 1951-11-01 48.0000 1951-12-01 42.0000 1952-01-01 44.0000 1952-02-01 39.0000 1952-03-01 38.0000 1952-04-01 36.0000 1952-05-01 30.0000 1952-06-01 32.0000 1952-08-01 30.0000 1952-09-01 40.0000 1952-10-01 38.0000 1952-11-01 42.0000 1952-12-01 40.0000 1953-01-01 42.0000 1953-02-01 44.0000 1953-03-01 49.0000 1953-04-01 44.0000 1953-05-01 41.0000 1953-06-01 42.0000 1953-08-01 45.0000 1953-09-01 44.0000 1953-10-01 41.0000 1953-11-01 38.0000 1953-12-01 34.0000 1954-01-01 34.0000 1954-02-01 31.0000 1954-03-01 34.0000 1954-04-01 34.0000 1954-05-01 39.0000 1954-06-01 33.0000 1954-08-01 36.0000 1954-09-01 41.0000 1954-10-01 40.0000 1954-11-01 46.0000 1954-12-01 47.0000 1955-01-01 48.0000 1955-02-01 52.0000 1955-03-01 58.0000 1955-04-01 55.0000 1955-05-01 56.0000 1955-06-01 62.0000 1955-08-01 52.0000 1955-09-01 53.0000 1955-10-01 52.0000 1955-11-01 57.0000 1955-12-01 56.0000 1956-01-01 53.0000 1956-02-01 58.0000 1956-03-01 60.0000 1956-04-01 59.0000 1956-05-01 60.0000 1956-06-01 56.0000 1956-08-01 50.0000 1956-09-01 52.0000 1956-10-01 52.0000 1956-11-01 45.0000 1956-12-01 54.0000 1957-01-01 56.0000 1957-02-01 55.0000 1957-03-01 50.0000 1957-04-01 42.0000 1957-05-01 42.0000 1957-06-01 40.0000 1957-07-01 45.0000 1957-09-01 40.0000 1957-10-01 41.0000 1957-11-01 40.0000 1957-12-01 38.0000 1958-01-01 32.0000 1958-02-01 34.0000 1958-03-01 34.0000 1958-04-01 32.0000 1958-05-01 28.0000 1958-06-01 32.0000 1958-07-01 34.0000 1958-08-01 42.0000 1958-09-01 40.0000 1958-10-01 44.0000 1958-11-01 50.0000 1958-12-01 48.0000 1959-01-01 48.0000 1959-02-01 58.0000 1959-03-01 64.0000 1959-04-01 68.0000 1959-05-01 64.0000 1959-06-01 64.0000 1959-07-01 61.0000 1959-08-01 47.0000 1959-09-01 40.0000 1959-10-01 36.0000 1959-11-01 42.0000 1959-12-01 48.0000 1960-01-01 52.0000 1960-02-01 59.0000 1960-03-01 56.0000 1960-04-01 50.0000 1960-05-01 44.0000 1960-06-01 44.0000 1960-07-01 41.0000 1960-08-01 36.0000 1960-09-01 38.0000 1960-10-01 36.0000 1960-11-01 39.0000 1960-12-01 38.0000 1961-01-01 44.0000 1961-02-01 38.0000 1961-03-01 43.0000 1961-04-01 46.0000 1961-05-01 46.0000 1961-06-01 42.0000 1961-07-01 44.0000 1961-08-01 50.0000 1961-09-01 52.0000 1961-10-01 52.0000 1961-11-01 50.0000 1961-12-01 54.0000 1962-01-01 63.0000 1962-02-01 62.0000 1962-03-01 63.0000 1962-04-01 60.0000 1962-05-01 54.0000 1962-06-01 46.0000 1962-07-01 42.0000 1962-08-01 42.0000 1962-09-01 40.0000 1962-10-01 42.0000 1962-11-01 47.0000 1962-12-01 47.0000 1963-01-01 50.0000 1963-02-01 52.0000 1963-03-01 51.0000 1963-04-01 54.0000 1963-05-01 58.0000 1963-06-01 55.0000 1963-07-01 52.0000 1963-08-01 46.0000 1963-09-01 46.0000 1963-10-01 42.0000 1963-11-01 40.0000 1963-12-01 41.0000 1964-01-01 44.0000 1964-02-01 54.0000 1964-03-01 59.0000 1964-04-01 60.0000 1964-05-01 54.0000 1964-06-01 54.0000 1964-07-01 54.0000 1964-08-01 52.0000 1964-09-01 56.0000 1964-10-01 52.0000 1964-11-01 56.0000 1964-12-01 55.0000 1965-01-01 63.0000 1965-02-01 66.0000 1965-03-01 62.0000 1965-04-01 69.0000 1965-05-01 64.0000 1965-06-01 57.0000 1965-07-01 54.0000 1965-08-01 56.0000 1965-09-01 54.0000 1965-10-01 41.0000 1965-11-01 44.0000 1965-12-01 44.0000 1966-01-01 50.0000 1966-02-01 50.0000 1966-03-01 56.0000 1966-04-01 58.0000 1966-05-01 57.0000 1966-06-01 55.0000 1966-07-01 58.0000 1966-08-01 57.0000 1966-09-01 52.0000 1966-10-01 51.0000 1966-11-01 51.0000 1966-12-01 50.0000 1967-01-01 48.0000 1967-02-01 46.0000 1967-03-01 50.0000 1967-04-01 42.0000 1967-05-01 42.0000 1967-06-01 43.0000 1967-07-01 40.0000 1967-08-01 42.0000 1967-09-01 43.0000 1967-10-01 41.0000 1967-11-01 42.0000 1967-12-01 49.0000 1968-01-01 55.0000 1968-02-01 54.0000 1968-03-01 56.0000 1968-04-01 58.0000 1968-05-01 57.0000 1968-06-01 60.0000 1968-07-01 58.0000 1968-08-01 55.0000 1968-09-01 39.0000 1968-10-01 38.0000 1968-11-01 41.0000 1968-12-01 42.0000 1969-01-01 44.0000 1969-02-01 47.0000 1969-03-01 52.0000 1969-04-01 52.0000