Monthly Million Square Feet
1919-01-01 4.50000
1919-02-01 6.60000
1919-03-01 12.6000
1919-04-01 20.2000
1919-05-01 26.5000
1919-06-01 30.5000
1919-07-01 30.3000
1919-08-01 26.7000
1919-09-01 22.0000
1919-10-01 27.9000
1919-11-01 18.2000
1919-12-01 15.8000
1920-01-01 11.6000
1920-02-01 9.50000
1920-03-01 16.0000
1920-04-01 20.9000
1920-05-01 17.1000
1920-06-01 10.9000
1920-07-01 8.60000
1920-08-01 10.8000
1920-09-01 8.20000
1920-10-01 11.2000
1920-11-01 7.90000
1920-12-01 5.50000
1921-01-01 6.70000
1921-02-01 8.60000
1921-03-01 14.4000
1921-04-01 18.0000
1921-05-01 18.8000
1921-06-01 18.2000
1921-07-01 14.0000
1921-08-01 18.0000
1921-09-01 21.5000
1921-10-01 22.0000
1921-11-01 22.7000
1921-12-01 21.9000
1922-01-01 18.1000
1922-02-01 16.5000
1922-03-01 30.4000
1922-04-01 31.6000
1922-05-01 31.5000
1922-06-01 31.5000
1922-07-01 24.4000
1922-08-01 23.7000
1922-09-01 23.3000
1922-10-01 25.8000
1922-11-01 28.7000
1922-12-01 26.0000
1923-01-01 24.6000
1923-02-01 22.7000
1923-03-01 39.5000
1923-04-01 39.2000
1923-05-01 34.3000
1923-06-01 25.3000
1923-07-01 23.7000
1923-08-01 24.1000
1923-09-01 22.5000
1923-10-01 35.0000
1923-11-01 33.1000
1923-12-01 30.5000
1924-01-01 34.6000
1924-02-01 28.0000
1924-03-01 44.1000
1924-04-01 42.2000
1924-05-01 34.4000
1924-06-01 28.3000
1924-07-01 20.9000
1924-08-01 24.6000
1924-09-01 24.3000
1924-10-01 28.4000
1924-11-01 31.4000
1924-12-01 29.7000
1925-01-01 23.5000
1925-02-01 23.7000
1925-03-01 40.3000
1925-04-01 46.2000
1925-05-01 42.2000
1925-06-01 37.5000
1925-07-01 40.5000
1925-08-01 46.3000
1925-09-01 38.2000
1925-10-01 44.0000
1925-11-01 44.6000
1925-12-01 43.2000
1926-01-01 33.6000
1926-02-01 26.5000
1926-03-01 42.6000
1926-04-01 45.7000
1926-05-01 43.9000
1926-06-01 40.2000
1926-07-01 31.7000
1926-08-01 37.2000
1926-09-01 36.7000
1926-10-01 38.8000
1926-11-01 39.0000
1926-12-01 34.4000