Month	Million Square Feet
1956-01-01	58.7000
1956-02-01	55.9000
1956-03-01	78.5000
1956-04-01	82.2000
1956-05-01	75.2000
1956-06-01	72.5000
1956-07-01	76.3000
1956-08-01	72.2000
1956-09-01	65.7000
1956-10-01	64.1000
1956-11-01	65.8000
1956-12-01	55.7000
1957-01-01	63.3000
1957-02-01	60.8000
1957-03-01	76.8000
1957-04-01	63.7000
1957-05-01	80.2000
1957-06-01	80.8000
1957-07-01	71.6000
1957-08-01	68.6000
1957-09-01	64.0000
1957-10-01	66.4000
1957-11-01	61.3000
1957-12-01	51.0000
1958-01-01	53.9000
1958-02-01	52.3000
1958-03-01	66.5000
1958-04-01	63.8000
1958-05-01	76.1000
1958-06-01	68.1000
1958-07-01	75.5000
1958-08-01	75.7000
1958-09-01	62.9000
1958-10-01	69.7000
1958-11-01	57.3000
1958-12-01	52.6000
1959-01-01	55.9000
1959-02-01	50.2000
1959-03-01	69.2000
1959-04-01	87.6000
1959-05-01	78.9000
1959-06-01	73.4000
1959-07-01	82.9000
1959-08-01	69.8000
1959-09-01	72.0000
1959-10-01	75.0000
1959-11-01	58.5000
1959-12-01	58.7000
1960-01-01	56.3000
1960-02-01	51.7000
1960-03-01	75.5000
1960-04-01	75.6000
1960-05-01	82.0000
1960-06-01	79.0000
1960-07-01	80.6000
1960-08-01	80.4000
1960-09-01	74.2000
1960-10-01	77.3000
1960-11-01	65.7000
1960-12-01	63.9000
1961-01-01	55.8000
1961-02-01	52.7000
1961-03-01	75.6000
1961-04-01	73.7000
1961-05-01	77.8000
1961-06-01	76.2000
1961-07-01	79.0000
1961-08-01	79.2000
1961-09-01	72.9000
1961-10-01	69.1000
1961-11-01	73.6000
1961-12-01	63.5000
1962-01-01	58.0000
1962-02-01	57.8000
1962-03-01	84.3000
1962-04-01	80.6000
1962-05-01	90.7000
1962-06-01	84.7000
1962-07-01	80.0000
1962-08-01	82.2000
1962-09-01	73.5000
1962-10-01	77.0000
1962-11-01	72.5000
1962-12-01	64.6000
1963-01-01	66.8000
1963-02-01	65.2000
1963-03-01	78.5000
1963-04-01	75.9000
1963-05-01	95.7000
1963-06-01	97.4000
1963-07-01	86.2000
1963-08-01	91.9000
1963-09-01	77.5000
1963-10-01	93.2000
1963-11-01	72.5000
1963-12-01	69.4000