Month	Thousands Of Long Tons
1919-01-01	502.000
1919-02-01	433.000
1919-03-01	414.000
1919-04-01	356.000
1919-05-01	359.000
1919-06-01	417.000
1919-07-01	453.000
1919-08-01	613.000
1919-09-01	539.000
1919-10-01	494.000
1919-11-01	594.000
1919-12-01	628.000
1920-01-01	645.000
1920-02-01	607.000
1920-03-01	749.000
1920-04-01	544.000
1920-05-01	638.000
1920-06-01	571.000
1920-07-01	589.000
1920-08-01	682.000
1920-09-01	659.000
1920-10-01	577.000
1920-11-01	478.000
1920-12-01	290.000
1921-01-01	162.000
1921-02-01	151.000
1921-03-01	160.000
1921-04-01	162.000
1921-05-01	179.000
1921-06-01	144.000
1921-07-01	127.000
1921-08-01	200.000
1921-09-01	224.000
1921-10-01	304.000
1921-11-01	259.000
1921-12-01	202.000
1922-01-01	235.000
1922-02-01	251.000
1922-03-01	347.000
1922-04-01	379.000
1922-05-01	408.000
1922-06-01	368.000
1922-07-01	382.000
1922-08-01	296.000
1922-09-01	256.000
1922-10-01	296.000
1922-11-01	371.000
1922-12-01	378.000
1923-01-01	424.000
1923-02-01	433.000
1923-03-01	530.000
1923-04-01	514.000
1923-05-01	515.000
1923-06-01	455.000
1923-07-01	392.000
1923-08-01	410.000
1923-09-01	388.000
1923-10-01	399.000
1923-11-01	366.000
1923-12-01	404.000
1924-01-01	433.000
1924-02-01	448.000
1924-03-01	472.000
1924-04-01	396.000
1924-05-01	329.000
1924-06-01	268.000
1924-07-01	267.000
1924-08-01	308.000
1924-09-01	357.000
1924-10-01	344.000
1924-11-01	348.000
1924-12-01	393.000
1925-01-01	436.000
1925-02-01	410.000
1925-03-01	416.000
1925-04-01	351.000
1925-05-01	360.000
1925-06-01	361.000
1925-07-01	346.000
1925-08-01	367.000
1925-09-01	382.000
1925-10-01	407.000
1925-11-01	407.000
1925-12-01	396.000
1926-01-01	384.000
1926-02-01	355.000
1926-03-01	397.000
1926-04-01	370.000
1926-05-01	370.000
1926-06-01	356.000
1926-07-01	351.000
1926-08-01	404.000
1926-09-01	434.000
1926-10-01	431.000
1926-11-01	398.000
1926-12-01	364.000