Quarter	Millions Of Wagon-Miles
1931-01-01	1159.00
1931-04-01	1097.00
1931-07-01	1106.00
1931-10-01	1107.00
1932-01-01	1088.00
1932-04-01	1020.00
1932-07-01	989.000
1932-10-01	1056.00
1933-01-01	1058.00
1933-04-01	986.000
1933-07-01	1042.00
1933-10-01	1120.00
1934-01-01	1169.00
1934-04-01	1073.00
1934-07-01	1089.00
1934-10-01	1129.00
1935-01-01	1145.00
1935-04-01	1077.00
1935-07-01	1101.00
1935-10-01	1180.00
1936-01-01	1208.00
1936-04-01	1141.00
1936-07-01	1161.00
1936-10-01	1212.00
1937-01-01	1228.00
1937-04-01	1208.00
1937-07-01	1195.00
1937-10-01	1232.00
1938-01-01	1225.00
1938-04-01	1095.00
1938-07-01	1065.00
1938-10-01	1156.00
1939-01-01	1179.00