Month	Million Square Feet
1923-01-01	16.0000
1923-02-01	23.4000
1923-03-01	29.3000
1923-04-01	30.6000
1923-05-01	32.8000
1923-06-01	24.6000
1923-07-01	21.9000
1923-08-01	20.2000
1923-09-01	19.4000
1923-10-01	22.5000
1923-11-01	20.3000
1923-12-01	20.0000
1924-01-01	17.4000
1924-02-01	22.9000
1924-03-01	27.8000
1924-04-01	24.9000
1924-05-01	28.3000
1924-06-01	22.5000
1924-07-01	22.9000
1924-08-01	21.4000
1924-09-01	22.9000
1924-10-01	22.5000
1924-11-01	20.0000
1924-12-01	20.0000
1925-01-01	20.7000
1925-02-01	18.3000
1925-03-01	27.6000
1925-04-01	30.0000
1925-05-01	30.1000
1925-06-01	33.2000
1925-07-01	33.5000
1925-08-01	36.0000
1925-09-01	34.8000
1925-10-01	28.3000
1925-11-01	25.8000
1925-12-01	26.3000
1926-01-01	23.3000
1926-02-01	20.1000
1926-03-01	32.6000
1926-04-01	30.8000
1926-05-01	30.7000
1926-06-01	28.8000
1926-07-01	30.2000
1926-08-01	31.7000
1926-09-01	31.0000
1926-10-01	26.7000
1926-11-01	25.5000
1926-12-01	23.7000
1927-01-01	20.1000
1927-02-01	20.6000
1927-03-01	33.9000
1927-04-01	31.4000
1927-05-01	31.3000
1927-06-01	31.6000
1927-07-01	29.6000
1927-08-01	29.7000
1927-09-01	25.9000
1927-10-01	27.5000
1927-11-01	24.1000
1927-12-01	21.4000
1928-01-01	22.4000
1928-02-01	22.0000
1928-03-01	29.0000
1928-04-01	35.3000
1928-05-01	33.1000
1928-06-01	38.5000
1928-07-01	35.2000
1928-08-01	32.0000
1928-09-01	33.4000
1928-10-01	34.2000
1928-11-01	29.1000
1928-12-01	25.8000