Quarter	Net Ton-Mile Per Pound Of Fuel Consumed
1935-01-01	1.07600
1935-04-01	1.09500
1935-07-01	1.15300
1935-10-01	1.11900
1936-01-01	1.08100
1936-04-01	1.13300
1936-07-01	1.18000
1936-10-01	1.11600
1937-01-01	1.09300
1937-04-01	1.17800
1937-07-01	1.20800
1937-10-01	1.15600
1938-01-01	1.11900
1938-04-01	1.12800
1938-07-01	1.15400
1938-10-01	1.12900
1939-01-01	1.12000