Month Number Per Workday 1938-01-01 99.0000 1938-02-01 210.000 1938-03-01 495.000 1938-04-01 546.000 1938-05-01 588.000 1938-06-01 558.000 1938-07-01 629.000 1938-08-01 625.000 1938-09-01 658.000 1938-10-01 645.000 1938-11-01 600.000 1938-12-01 536.000 1939-01-01 537.000 1939-02-01 712.000 1939-03-01 836.000 1939-04-01 837.000 1939-05-01 787.000 1939-06-01 718.000 1939-07-01 638.000 1939-08-01 665.000 1939-09-01 725.000 1939-10-01 774.000 1939-11-01 661.000 1939-12-01 592.000 1940-01-01 540.000 1940-02-01 754.000 1940-03-01 1017.00 1940-04-01 1093.00 1940-05-01 1084.00 1940-06-01 1000.00 1940-07-01 997.000 1940-08-01 1017.00 1940-09-01 1069.00 1940-10-01 926.000 1940-11-01 784.000 1940-12-01 651.000 1941-01-01 693.000 1941-02-01 961.000 1941-03-01 1194.00 1941-04-01 1464.00 1941-05-01 1645.00 1941-06-01 1554.00 1941-07-01 1349.00 1941-08-01 1210.00 1941-09-01 1080.00 1941-10-01 886.000 1941-11-01 930.000 1941-12-01 712.000