Month Million Square Feet 1925-01-01 49.9000 1925-02-01 48.5000 1925-03-01 75.7000 1925-04-01 84.1000 1925-05-01 81.1000 1925-06-01 80.5000 1925-07-01 85.5000 1925-08-01 91.4000 1925-09-01 84.7000 1925-10-01 83.1000 1925-11-01 78.4000 1925-12-01 77.6000 1926-01-01 64.1000 1926-02-01 55.1000 1926-03-01 85.8000 1926-04-01 85.6000 1926-05-01 83.8000 1926-06-01 76.7000 1926-07-01 68.1000 1926-08-01 75.3000 1926-09-01 73.8000 1926-10-01 71.4000 1926-11-01 69.7000 1926-12-01 63.1000 1927-01-01 52.5000 1927-02-01 54.1000 1927-03-01 86.7000 1927-04-01 83.0000 1927-05-01 72.6000 1927-06-01 77.1000 1927-07-01 67.1000 1927-08-01 72.3000 1927-09-01 66.7000 1927-10-01 75.7000 1927-11-01 68.0000 1927-12-01 62.4000 1928-01-01 63.3000 1928-02-01 68.3000 1928-03-01 87.3000 1928-04-01 93.9000 1928-05-01 93.3000 1928-06-01 93.8000 1928-07-01 81.6000 1928-08-01 78.1000 1928-09-01 75.3000 1928-10-01 85.2000 1928-11-01 72.7000 1928-12-01 64.0000 1929-01-01 57.4000 1929-02-01 53.5000 1929-03-01 76.5000 1929-04-01 84.4000 1929-05-01 80.4000 1929-06-01 70.8000 1929-07-01 74.9000 1929-08-01 65.5000 1929-09-01 58.5000 1929-10-01 64.4000 1929-11-01 50.5000 1929-12-01 43.1000 1930-01-01 31.1000 1930-02-01 36.5000 1930-03-01 53.0000 1930-04-01 54.6000 1930-05-01 52.6000 1930-06-01 46.3000 1930-07-01 43.6000 1930-08-01 38.5000 1930-09-01 39.7000 1930-10-01 39.1000 1930-11-01 32.6000 1930-12-01 28.4000 1931-01-01 24.0000 1931-02-01 28.0000 1931-03-01 37.4000 1931-04-01 38.5000 1931-05-01 38.5000 1931-06-01 32.4000 1931-07-01 32.3000 1931-08-01 29.8000 1931-09-01 29.6000 1931-10-01 30.4000 1931-11-01 20.2000 1931-12-01 16.9000 1932-01-01 12.3000 1932-02-01 12.1000 1932-03-01 16.7000 1932-04-01 13.7000 1932-05-01 15.6000 1932-06-01 12.2000 1932-07-01 14.1000 1932-08-01 13.7000 1932-09-01 13.3000 1932-10-01 10.9000 1932-11-01 11.5000 1932-12-01 6.80000 1933-01-01 7.60000 1933-02-01 7.20000 1933-03-01 9.80000 1933-04-01 10.8000 1933-05-01 14.9000 1933-06-01 15.3000 1933-07-01 14.3000 1933-08-01 12.7000 1933-09-01 12.8000 1933-10-01 15.2000 1933-11-01 11.5000 1933-12-01 11.1000 1934-01-01 9.50000 1934-02-01 7.90000 1934-03-01 14.5000 1934-04-01 13.9000 1934-05-01 14.2000 1934-06-01 13.7000 1934-07-01 13.1000 1934-08-01 13.9000 1934-09-01 12.4000 1934-10-01 14.9000 1934-11-01 12.6000 1934-12-01 9.00000 1935-01-01 11.2000 1935-02-01 9.60000 1935-03-01 15.8000 1935-04-01 19.6000 1935-05-01 22.3000 1935-06-01 22.8000 1935-07-01 21.4000 1935-08-01 21.4000 1935-09-01 20.6000 1935-10-01 27.6000 1935-11-01 23.9000 1935-12-01 32.6000 1936-01-01 26.4000 1936-02-01 20.5000 1936-03-01 30.7000 1936-04-01 37.1000 1936-05-01 36.2000 1936-06-01 36.5000 1936-07-01 38.0000 1936-08-01 39.9000 1936-09-01 34.8000 1936-10-01 35.9000 1936-11-01 34.6000 1936-12-01 33.3000 1937-01-01 33.1000 1937-02-01 28.4000 1937-03-01 40.8000 1937-04-01 47.8000 1937-05-01 39.7000 1937-06-01 45.5000 1937-07-01 45.1000 1937-08-01 40.1000 1937-09-01 31.5000 1937-10-01 29.9000 1937-11-01 28.9000 1937-12-01 27.5000 1938-01-01 19.0000 1938-02-01 18.7000 1938-03-01 33.7000 1938-04-01 32.3000 1938-05-01 34.3000 1938-06-01 35.7000 1938-07-01 33.1000 1938-08-01 38.3000 1938-09-01 37.3000 1938-10-01 50.3000 1938-11-01 44.9000 1938-12-01 48.2000 1939-01-01 34.3000 1939-02-01 31.9000 1939-03-01 48.6000 1939-04-01 44.9000 1939-05-01 45.2000 1939-06-01 42.9000 1939-07-01 44.8000 1939-08-01 43.4000 1939-09-01 49.4000 1939-10-01 44.8000 1939-11-01 46.3000 1939-12-01 34.2000 1940-01-01 28.1000 1940-02-01 31.4000 1940-03-01 45.5000 1940-04-01 50.0000 1940-05-01 52.8000 1940-06-01 51.4000 1940-07-01 59.6000 1940-08-01 62.5000 1940-09-01 64.9000 1940-10-01 74.6000 1940-11-01 75.9000 1940-12-01 90.3000 1941-01-01 52.2000 1941-02-01 49.0000 1941-03-01 65.2000 1941-04-01 73.4000 1941-05-01 99.0000 1941-06-01 83.8000 1941-07-01 91.0000 1941-08-01 126.300 1941-09-01 90.3000 1941-10-01 99.4000 1941-11-01 61.1000 1941-12-01 50.4000 1942-01-01 47.9000 1942-02-01 73.3000 1942-03-01 93.1000 1942-04-01 89.6000 1942-05-01 106.100 1942-06-01 184.700 1942-07-01 146.800 1942-08-01 116.800 1942-09-01 127.500 1942-10-01 114.600 1942-11-01 90.3000 1942-12-01 105.400 1943-01-01 52.8000 1943-02-01 60.0000 1943-03-01 45.2000 1943-04-01 37.6000 1943-05-01 30.2000 1943-06-01 31.1000 1943-07-01 27.3000 1943-08-01 43.1000 1943-09-01 22.8000 1943-10-01 27.8000 1943-11-01 27.9000 1943-12-01 38.6000 1944-01-01 20.1000 1944-02-01 17.1000 1944-03-01 19.4000 1944-04-01 20.5000 1944-05-01 15.2000 1944-06-01 16.6000 1944-07-01 19.4000 1944-08-01 17.0000 1944-09-01 19.9000 1944-10-01 17.7000 1944-11-01 21.6000 1944-12-01 24.0000 1945-01-01 15.0000 1945-02-01 16.0000 1945-03-01 30.7000 1945-04-01 31.3000 1945-05-01 23.7000 1945-06-01 21.4000 1945-07-01 29.7000 1945-08-01 30.1000 1945-09-01 41.3000 1945-10-01 47.0000 1945-11-01 55.7000 1945-12-01 54.8000 1946-01-01 54.8000 1946-02-01 56.2000 1946-03-01 99.8000 1946-04-01 107.200 1946-05-01 120.100 1946-06-01 92.6000 1946-07-01 87.6000 1946-08-01 77.9000 1946-09-01 73.0000 1946-10-01 70.5000 1946-11-01 57.1000 1946-12-01 49.5000 1947-01-01 64.8000 1947-02-01 53.7000 1947-03-01 65.1000 1947-04-01 64.9000 1947-05-01 71.4000 1947-06-01 56.6000 1947-07-01 68.6000 1947-08-01 89.0000 1947-09-01 67.2000 1947-10-01 85.6000 1947-11-01 70.9000 1947-12-01 65.1000 1948-01-01 59.5000 1948-02-01 60.5000 1948-03-01 60.8000 1948-04-01 80.5000 1948-05-01 91.8000 1948-06-01 73.7000 1948-07-01 88.8000 1948-08-01 78.2000 1948-09-01 64.2000 1948-10-01 69.6000 1948-11-01 58.5000 1948-12-01 59.4000 1949-01-01 41.5000 1949-02-01 47.9000 1949-03-01 55.6000 1949-04-01 69.2000 1949-05-01 72.7000 1949-06-01 79.1000 1949-07-01 76.4000 1949-08-01 74.3000 1949-09-01 95.1000 1949-10-01 92.4000 1949-11-01 78.5000 1949-12-01 76.8000 1950-01-01 64.1000 1950-02-01 70.8000 1950-03-01 108.800 1950-04-01 127.500 1950-05-01 125.000 1950-06-01 122.500 1950-07-01 130.300 1950-08-01 140.000 1950-09-01 112.000 1950-10-01 107.000 1950-11-01 101.700 1950-12-01 95.8000 1951-01-01 92.7000 1951-02-01 97.5000 1951-03-01 108.600 1951-04-01 106.500 1951-05-01 117.800 1951-06-01 101.200 1951-07-01 98.3000 1951-08-01 96.9000 1951-09-01 88.2000 1951-10-01 86.4000 1951-11-01 74.6000 1951-12-01 80.8000 1952-01-01 62.2000 1952-02-01 70.1000 1952-03-01 98.5000 1952-04-01 113.000 1952-05-01 119.700 1952-06-01 103.200 1952-07-01 104.700 1952-08-01 104.500 1952-09-01 85.9000 1952-10-01 103.700 1952-11-01 94.6000 1952-12-01 100.000 1953-01-01 83.1000 1953-02-01 77.8000 1953-03-01 100.700 1953-04-01 114.600 1953-05-01 111.900 1953-06-01 84.9000 1953-07-01 127.000 1953-08-01 92.9000 1953-09-01 90.3000 1953-10-01 117.900 1953-11-01 90.2000 1953-12-01 81.9000 1954-01-01 82.0000 1954-02-01 84.7000 1954-03-01 111.000 1954-04-01 126.100 1954-05-01 136.600 1954-06-01 121.900 1954-07-01 123.400 1954-08-01 112.900 1954-09-01 124.000 1954-10-01 135.600 1954-11-01 110.100 1954-12-01 128.400 1955-01-01 110.600 1955-02-01 116.200 1955-03-01 150.500 1955-04-01 159.600 1955-05-01 148.500 1955-06-01 152.400 1955-07-01 157.600 1955-08-01 129.700 1955-09-01 121.400 1955-10-01 125.700 1955-11-01 119.500 1955-12-01 119.500 1956-01-01 115.900 1956-02-01 121.600 1956-03-01 169.900 1956-04-01 172.900 1956-05-01 167.300 1956-06-01 134.400 1956-07-01 128.800 1956-08-01 134.800 1956-09-01 125.000 1956-10-01 111.500 1956-11-01 106.900 1956-12-01 86.1000