Month	Million Square Feet
1923-01-01	3.67000
1923-02-01	6.71000
1923-03-01	6.66000
1923-04-01	7.71000
1923-05-01	6.45000
1923-06-01	6.55000
1923-07-01	6.37000
1923-08-01	5.74000
1923-09-01	4.66000
1923-10-01	7.02000
1923-11-01	5.67000
1923-12-01	4.89000
1924-01-01	4.41000
1924-02-01	7.36000
1924-03-01	8.25000
1924-04-01	7.39000
1924-05-01	9.46000
1924-06-01	6.67000
1924-07-01	8.88000
1924-08-01	6.32000
1924-09-01	6.63000
1924-10-01	5.28000
1924-11-01	3.70000
1924-12-01	4.83000
1925-01-01	3.21000
1925-02-01	4.98000
1925-03-01	7.11000
1925-04-01	6.79000
1925-05-01	6.36000
1925-06-01	10.7900
1925-07-01	9.44000
1925-08-01	7.66000
1925-09-01	8.86000
1925-10-01	5.28000
1925-11-01	4.41000
1925-12-01	5.21000
1926-01-01	3.75000
1926-02-01	4.25000
1926-03-01	5.48000
1926-04-01	6.79000
1926-05-01	8.09000
1926-06-01	7.70000
1926-07-01	7.23000
1926-08-01	8.01000
1926-09-01	6.35000
1926-10-01	5.11000
1926-11-01	6.22000
1926-12-01	5.06000
1927-01-01	3.52000
1927-02-01	4.57000
1927-03-01	7.22000
1927-04-01	6.14000
1927-05-01	7.75000
1927-06-01	8.81000
1927-07-01	7.91000
1927-08-01	9.11000
1927-09-01	6.53000
1927-10-01	6.65000
1927-11-01	7.13000
1927-12-01	5.17000
1928-01-01	5.33000
1928-02-01	4.77000
1928-03-01	7.82000
1928-04-01	6.98000
1928-05-01	9.00000
1928-06-01	9.77000
1928-07-01	8.19000
1928-08-01	7.79000
1928-09-01	9.30000
1928-10-01	7.59000
1928-11-01	6.82000
1928-12-01	7.03000