Monthly Millions Of Man-Hours
1921-07-01 74.2000
1921-08-01 84.1000
1921-09-01 81.5000
1921-10-01 85.5000
1921-11-01 74.0000
1921-12-01 63.7000
1922-01-01 57.7000
1922-02-01 52.9000
1922-03-01 62.8000
1922-04-01 66.0000
1922-05-01 77.3000
1922-06-01 82.0000
1922-07-01 80.5000
1922-08-01 91.8000
1922-09-01 86.5000
1922-10-01 87.1000
1922-11-01 76.9000
1922-12-01 67.0000
1923-01-01 68.8000
1923-02-01 60.8000
1923-03-01 74.1000
1923-04-01 78.7000
1923-05-01 91.1000
1923-06-01 96.7000
1923-07-01 97.5000
1923-08-01 105.100
1923-09-01 91.5000
1923-10-01 97.8000
1923-11-01 81.0000
1923-12-01 68.6000
1924-01-01 68.5000
1924-02-01 64.3000
1924-03-01 71.3000
1924-04-01 80.8000
1924-05-01 86.6000
1924-06-01 83.8000
1924-07-01 87.5000
1924-08-01 89.0000
1924-09-01 85.2000
1924-10-01 90.4000
1924-11-01 74.7000
1924-12-01 68.1000
1925-01-01 69.2000
1925-02-01 61.7000
1925-03-01 70.4000
1925-04-01 78.0000
1925-05-01 83.3000
1925-06-01 88.9000
1925-07-01 91.0000
1925-08-01 91.3000
1925-09-01 87.1000
1925-10-01 91.1000
1925-11-01 76.9000
1925-12-01 72.9000
1926-01-01 69.0000
1926-02-01 66.4000
1926-03-01 77.0000
1926-04-01 83.6000
1926-05-01 90.1000
1926-06-01 96.8000
1926-07-01 99.6000
1926-08-01 99.7000
1926-09-01 93.9000
1926-10-01 96.1000
1926-11-01 85.2000
1926-12-01 77.6000
1927-01-01 71.3000
1927-02-01 65.7000
1927-03-01 78.7000
1927-04-01 87.6000
1927-05-01 94.7000
1927-06-01 101.700
1927-07-01 98.9000
1927-08-01 102.100
1927-09-01 91.6000
1927-10-01 92.5000
1927-11-01 80.9000
1927-12-01 71.9000
1928-01-01 67.0000
1928-02-01 62.5000
1928-03-01 73.2000
1928-04-01 78.0000
1928-05-01 91.5000
1928-06-01 95.1000
1928-07-01 92.5000
1928-08-01 98.2000
1928-09-01 86.3000
1928-10-01 92.6000
1928-11-01 77.5000
1928-12-01 67.6000
1929-01-01 68.7000
1929-02-01 60.7000
1929-03-01 73.1000
1929-04-01 83.3000
1929-05-01 93.0000
1929-06-01 94.6000
1929-07-01 100.000
1929-08-01 103.900
1929-09-01 91.1000
1929-10-01 96.9000
1929-11-01 78.5000
1929-12-01 69.2000
1930-01-01 66.5000
1930-02-01 58.9000
1930-03-01 69.0000
1930-04-01 77.4000
1930-05-01 83.3000
1930-06-01 78.4000
1930-07-01 77.1000
1930-08-01 75.2000
1930-09-01 67.9000
1930-10-01 68.0000
1930-11-01 52.7000
1930-12-01 51.1000
1931-01-01 50.6000
1931-02-01 44.4000
1931-03-01 51.6000
1931-04-01 55.9000
1931-05-01 58.1000
1931-06-01 59.6000
1931-07-01 58.0000
1931-08-01 55.3000
1931-09-01 50.6000
1931-10-01 48.6000
1931-11-01 38.1000
1931-12-01 36.1000
1932-01-01 34.5000
1932-02-01 33.8000
1932-03-01 38.1000
1932-04-01 38.1000
1932-05-01 40.6000
1932-06-01 40.1000
1932-07-01 36.4000
1932-08-01 36.9000
1932-09-01 34.9000
1932-10-01 36.1000
1932-11-01 32.3000
1932-12-01 30.1000
1933-01-01 28.3000
1933-02-01 26.3000
1933-03-01 28.7000
1933-04-01 29.4000
1933-05-01 33.8000
1933-06-01 35.4000
1933-07-01 36.5000
1933-08-01 40.8000
1933-09-01 39.3000
1933-10-01 39.6000
1933-11-01 33.3000
1933-12-01 30.7000
1934-01-01 31.5000
1934-02-01 30.1000
1934-03-01 34.3000
1934-04-01 35.5000
1934-05-01 42.1000
1934-06-01 44.2000
1934-07-01 43.1000
1934-08-01 44.2000
1934-09-01 38.7000
1934-10-01 41.9000
1934-11-01 33.9000
1934-12-01 31.2000
1935-01-01 34.7000
1935-02-01 29.6000
1935-03-01 33.1000
1935-04-01 35.1000
1935-05-01 39.7000
1935-06-01 41.7000
1935-07-01 44.4000
1935-08-01 44.6000
1935-09-01 39.4000
1935-10-01 42.2000
1935-11-01 34.7000
1935-12-01 32.9000
1936-01-01 35.6000
1936-02-01 38.6000
1936-03-01 40.0000
1936-04-01 43.7000
1936-05-01 44.7000
1936-06-01 47.6000
1936-07-01 48.6000
1936-08-01 47.9000
1936-09-01 47.0000
1936-10-01 48.5000
1936-11-01 39.5000
1936-12-01 38.3000
1937-01-01 37.1000
1937-02-01 37.3000
1937-03-01 42.2000
1937-04-01 45.8000
1937-05-01 49.5000
1937-06-01 54.1000
1937-07-01 54.3000
1937-08-01 53.0000
1937-09-01 47.6000
1937-10-01 45.3000
1937-11-01 37.4000
1937-12-01 34.2000
1938-01-01 31.8000
1938-02-01 28.8000
1938-03-01 33.7000
1938-04-01 32.7000
1938-05-01 34.0000
1938-06-01 37.2000
1938-07-01 37.1000
1938-08-01 41.3000
1938-09-01 40.3000
1938-10-01 41.6000
1938-11-01 36.3000
1938-12-01 33.0000
1939-01-01 31.8000
1939-02-01 29.8000
1939-03-01 35.2000
1939-04-01 35.2000
1939-05-01 41.2000
1939-06-01 44.0000
1939-07-01 42.6000
1939-08-01 45.8000
1939-09-01 42.2000
1939-10-01 43.8000
1939-11-01 38.1000
1939-12-01 33.5000
1940-01-01 34.1000
1940-02-01 32.0000
1940-03-01 34.5000
1940-04-01 37.4000
1940-05-01 42.2000
1940-06-01 43.3000
1940-07-01 46.5000
1940-08-01 48.3000
1940-09-01 43.7000
1940-10-01 47.1000
1940-11-01 38.5000
1940-12-01 34.6000
1941-01-01 36.2000
1941-02-01 32.6000
1941-03-01 38.0000
1941-04-01 43.3000
1941-05-01 49.2000
1941-06-01 51.2000
1941-07-01 55.1000
1941-08-01 56.7000
1941-09-01 54.4000
1941-10-01 56.9000
1941-11-01 47.1000
1941-12-01 45.1000
1942-01-01 42.3000
1942-02-01 38.0000
1942-03-01 45.3000
1942-04-01 54.5000
1942-05-01 55.2000
1942-06-01 60.8000
1942-07-01 64.1000
1942-08-01 64.9000
1942-09-01 60.6000
1942-10-01 63.2000
1942-11-01 55.3000