Month	Million Square Feet
1923-01-01	4.91000
1923-02-01	8.76000
1923-03-01	9.47000
1923-04-01	10.9300
1923-05-01	9.23000
1923-06-01	9.31000
1923-07-01	8.89000
1923-08-01	7.93000
1923-09-01	6.30000
1923-10-01	9.51000
1923-11-01	7.31000
1923-12-01	6.29000
1924-01-01	6.03000
1924-02-01	9.30000
1924-03-01	11.5500
1924-04-01	10.3200
1924-05-01	12.3700
1924-06-01	9.47000
1924-07-01	11.9100
1924-08-01	8.94000
1924-09-01	9.61000
1924-10-01	7.71000
1924-11-01	5.28000
1924-12-01	6.32000
1925-01-01	5.00000
1925-02-01	7.41000
1925-03-01	9.93000
1925-04-01	10.2000
1925-05-01	9.89000
1925-06-01	14.5000
1925-07-01	13.8600
1925-08-01	12.5700
1925-09-01	11.7000
1925-10-01	7.82000
1925-11-01	6.67000
1925-12-01	7.16000
1926-01-01	5.33000
1926-02-01	5.72000
1926-03-01	8.91000
1926-04-01	9.98000
1926-05-01	11.3100
1926-06-01	10.4900
1926-07-01	9.98000
1926-08-01	10.9200
1926-09-01	9.42000
1926-10-01	7.87000
1926-11-01	8.98000
1926-12-01	7.35000
1927-01-01	4.62000
1927-02-01	6.45000
1927-03-01	11.0600
1927-04-01	9.23000
1927-05-01	11.8600
1927-06-01	12.5600
1927-07-01	11.2500
1927-08-01	12.1800
1927-09-01	9.96000
1927-10-01	9.52000
1927-11-01	9.74000
1927-12-01	7.39000
1928-01-01	6.80000
1928-02-01	6.58000
1928-03-01	11.1600
1928-04-01	10.0900
1928-05-01	12.4900
1928-06-01	13.4800
1928-07-01	11.7100
1928-08-01	10.8800
1928-09-01	11.5800
1928-10-01	10.8100
1928-11-01	9.30000
1928-12-01	8.54000