Month	Million Square Feet
1956-01-01	26.7600
1956-02-01	20.9900
1956-03-01	29.1300
1956-04-01	32.5300
1956-05-01	32.7300
1956-06-01	29.6100
1956-07-01	30.3000
1956-08-01	29.3500
1956-09-01	25.9300
1956-10-01	27.9700
1956-11-01	28.7200
1956-12-01	24.1900
1957-01-01	25.6500
1957-02-01	26.7900
1957-03-01	33.4600
1957-04-01	27.5400
1957-05-01	36.2200
1957-06-01	33.9500
1957-07-01	29.3300
1957-08-01	30.4600
1957-09-01	29.6000
1957-10-01	30.3500
1957-11-01	29.0400
1957-12-01	22.7300
1958-01-01	25.1200
1958-02-01	26.1600
1958-03-01	32.0800
1958-04-01	31.3500
1958-05-01	39.2900
1958-06-01	35.3100
1958-07-01	34.3100
1958-08-01	33.6400
1958-09-01	28.8100
1958-10-01	30.7400
1958-11-01	26.4500
1958-12-01	24.8900
1959-01-01	24.1600
1959-02-01	22.9800
1959-03-01	30.3900
1959-04-01	39.6100
1959-05-01	32.7300
1959-06-01	34.2700
1959-07-01	35.8500
1959-08-01	28.9900
1959-09-01	29.1000
1959-10-01	28.1400
1959-11-01	23.3500
1959-12-01	24.3500
1960-01-01	22.6300
1960-02-01	21.0800
1960-03-01	35.7600
1960-04-01	31.3600
1960-05-01	35.4800
1960-06-01	35.8200
1960-07-01	33.8700
1960-08-01	32.3400
1960-09-01	29.9900
1960-10-01	30.9300
1960-11-01	26.0300
1960-12-01	30.1800
1961-01-01	24.0600
1961-02-01	24.8600
1961-03-01	34.5900
1961-04-01	33.8600
1961-05-01	35.7100
1961-06-01	36.3200
1961-07-01	35.4500
1961-08-01	29.7400
1961-09-01	29.9600
1961-10-01	29.0000
1961-11-01	30.0900
1961-12-01	26.3600
1962-01-01	24.9300
1962-02-01	24.5300
1962-03-01	35.1300
1962-04-01	35.1200
1962-05-01	36.3200
1962-06-01	38.5300
1962-07-01	33.5600
1962-08-01	29.1900
1962-09-01	29.3700
1962-10-01	30.2400
1962-11-01	28.5700
1962-12-01	26.8400
1963-01-01	27.3200
1963-02-01	28.9800
1963-03-01	35.3800
1963-04-01	33.1200
1963-05-01	38.4300
1963-06-01	38.8100
1963-07-01	34.7100
1963-08-01	35.1400
1963-09-01	30.3600
1963-10-01	35.5100
1963-11-01	28.2700
1963-12-01	29.5700