Month	Percentage
1955-05-01	57.0000
1955-06-01	57.0000
1955-08-01	59.0000
1955-09-01	57.0000
1955-10-01	57.0000
1955-11-01	62.0000
1955-12-01	63.0000
1956-01-01	64.0000
1956-02-01	68.0000
1956-03-01	64.0000
1956-04-01	61.0000
1956-05-01	62.0000
1956-06-01	62.0000
1956-08-01	63.0000
1956-09-01	62.0000
1956-10-01	64.0000
1956-11-01	66.0000
1956-12-01	66.0000
1957-01-01	60.0000
1957-02-01	63.0000
1957-03-01	63.0000
1957-04-01	53.0000
1957-05-01	51.0000
1957-06-01	54.0000
1957-07-01	64.0000
1957-09-01	49.0000
1957-10-01	44.0000
1957-11-01	50.0000
1957-12-01	49.0000
1958-01-01	43.0000
1958-02-01	36.0000
1958-03-01	41.0000
1958-04-01	33.0000
1958-05-01	32.0000
1958-06-01	38.0000
1958-07-01	37.0000
1958-08-01	26.0000
1958-09-01	33.0000
1958-10-01	40.0000
1958-11-01	43.0000
1958-12-01	47.0000
1959-01-01	41.0000
1959-02-01	43.0000
1959-03-01	42.0000
1959-04-01	49.0000
1959-05-01	49.0000
1959-06-01	50.0000
1959-07-01	49.0000
1959-08-01	53.0000
1959-09-01	54.0000
1959-10-01	49.0000
1959-11-01	55.0000
1959-12-01	49.0000
1960-01-01	55.0000
1960-02-01	50.0000
1960-03-01	46.0000
1960-04-01	50.0000
1960-05-01	46.0000
1960-06-01	50.0000
1960-07-01	45.0000
1960-08-01	47.0000
1960-09-01	43.0000
1960-10-01	39.0000
1960-11-01	38.0000
1960-12-01	37.0000
1961-01-01	40.0000
1961-02-01	39.0000
1961-03-01	45.0000
1961-04-01	45.0000
1961-05-01	41.0000
1961-06-01	38.0000
1961-07-01	45.0000
1961-08-01	47.0000
1961-09-01	46.0000
1961-10-01	39.0000
1961-11-01	39.0000
1961-12-01	47.0000
1962-01-01	41.0000
1962-02-01	47.0000
1962-03-01	44.0000
1962-04-01	46.0000
1962-05-01	39.0000
1962-06-01	41.0000
1962-07-01	38.0000
1962-08-01	46.0000
1962-09-01	48.0000
1962-10-01	47.0000
1962-11-01	47.0000
1962-12-01	43.0000
1963-01-01	47.0000
1963-02-01	45.0000
1963-03-01	45.0000
1963-04-01	45.0000
1963-05-01	44.0000
1963-06-01	43.0000
1963-07-01	48.0000
1963-08-01	48.0000
1963-09-01	46.0000
1963-10-01	46.0000
1963-11-01	42.0000
1963-12-01	48.0000
1964-01-01	46.0000
1964-02-01	44.0000
1964-03-01	49.0000
1964-04-01	44.0000
1964-05-01	50.0000
1964-06-01	50.0000
1964-07-01	48.0000
1964-08-01	51.0000
1964-09-01	50.0000
1964-10-01	51.0000
1964-11-01	55.0000
1964-12-01	54.0000
1965-01-01	57.0000
1965-02-01	58.0000
1965-03-01	57.0000
1965-04-01	65.0000
1965-05-01	58.0000
1965-06-01	61.0000
1965-07-01	57.0000
1965-08-01	62.0000
1965-09-01	64.0000
1965-10-01	58.0000
1965-11-01	63.0000
1965-12-01	65.0000
1966-01-01	68.0000
1966-02-01	71.0000
1966-03-01	71.0000
1966-04-01	71.0000
1966-05-01	74.0000
1966-06-01	77.0000
1966-07-01	69.0000
1966-08-01	75.0000
1966-09-01	72.0000
1966-10-01	71.0000
1966-11-01	73.0000
1966-12-01	73.0000
1967-01-01	73.0000
1967-02-01	71.0000
1967-03-01	70.0000
1967-04-01	70.0000
1967-05-01	67.0000
1967-06-01	67.0000