Month	Million Square Feet
1923-01-01	11.0800
1923-02-01	14.6400
1923-03-01	19.8400
1923-04-01	19.6700
1923-05-01	23.6200
1923-06-01	15.3300
1923-07-01	12.9900
1923-08-01	12.3000
1923-09-01	13.1500
1923-10-01	12.9300
1923-11-01	13.0800
1923-12-01	13.7500
1924-01-01	11.4000
1924-02-01	13.5800
1924-03-01	16.2800
1924-04-01	14.5100
1924-05-01	15.9700
1924-06-01	12.9700
1924-07-01	11.0300
1924-08-01	12.4900
1924-09-01	13.2800
1924-10-01	14.7400
1924-11-01	14.7600
1924-12-01	13.7600
1925-01-01	15.7500
1925-02-01	10.8300
1925-03-01	17.6700
1925-04-01	19.7400
1925-05-01	20.1700
1925-06-01	18.6600
1925-07-01	19.6600
1925-08-01	23.4200
1925-09-01	23.0700
1925-10-01	20.4500
1925-11-01	19.1400
1925-12-01	19.1400
1926-01-01	17.9700
1926-02-01	14.4300
1926-03-01	23.6900
1926-04-01	20.8600
1926-05-01	19.4200
1926-06-01	18.3100
1926-07-01	20.1900
1926-08-01	20.7400
1926-09-01	21.6000
1926-10-01	18.7800
1926-11-01	16.5600
1926-12-01	16.3000
1927-01-01	15.5000
1927-02-01	14.1100
1927-03-01	22.7800
1927-04-01	22.1500
1927-05-01	19.4100
1927-06-01	19.0300
1927-07-01	18.3500
1927-08-01	17.5600
1927-09-01	15.8800
1927-10-01	18.0200
1927-11-01	14.3200
1927-12-01	13.9800
1928-01-01	15.6000
1928-02-01	15.4800
1928-03-01	17.8600
1928-04-01	25.2400
1928-05-01	20.6300
1928-06-01	25.0300
1928-07-01	23.4600
1928-08-01	21.1800
1928-09-01	21.8500
1928-10-01	23.3500
1928-11-01	19.7300
1928-12-01	17.2500