Month	Million Square Feet
1923-01-01	4.15000
1923-02-01	6.09000
1923-03-01	8.45000
1923-04-01	7.18000
1923-05-01	11.2600
1923-06-01	5.44000
1923-07-01	4.31000
1923-08-01	3.53000
1923-09-01	4.28000
1923-10-01	3.92000
1923-11-01	4.86000
1923-12-01	5.00000
1924-01-01	3.31000
1924-02-01	3.98000
1924-03-01	4.59000
1924-04-01	4.67000
1924-05-01	4.39000
1924-06-01	3.14000
1924-07-01	2.89000
1924-08-01	3.70000
1924-09-01	4.05000
1924-10-01	4.47000
1924-11-01	3.99000
1924-12-01	4.62000
1925-01-01	4.24000
1925-02-01	3.22000
1925-03-01	4.70000
1925-04-01	6.04000
1925-05-01	5.16000
1925-06-01	3.85000
1925-07-01	5.47000
1925-08-01	4.72000
1925-09-01	8.56000
1925-10-01	6.68000
1925-11-01	7.16000
1925-12-01	5.12000
1926-01-01	5.90000
1926-02-01	5.02000
1926-03-01	6.92000
1926-04-01	4.86000
1926-05-01	6.47000
1926-06-01	5.22000
1926-07-01	8.73000
1926-08-01	6.81000
1926-09-01	5.96000
1926-10-01	6.33000
1926-11-01	6.18000
1926-12-01	5.39000
1927-01-01	3.48000
1927-02-01	4.03000
1927-03-01	6.08000
1927-04-01	9.02000
1927-05-01	5.68000
1927-06-01	5.35000
1927-07-01	5.44000
1927-08-01	5.77000
1927-09-01	5.19000
1927-10-01	5.21000
1927-11-01	6.12000
1927-12-01	4.33000
1928-01-01	4.27000
1928-02-01	5.04000
1928-03-01	6.60000
1928-04-01	10.5500
1928-05-01	5.89000
1928-06-01	10.3600
1928-07-01	6.14000
1928-08-01	8.28000
1928-09-01	10.0600
1928-10-01	9.61000
1928-11-01	6.48000
1928-12-01	6.00000