Month	Thousands Of Long Tons
1920-09-01	270.000
1920-10-01	187.000
1920-11-01	220.000
1920-12-01	189.000
1921-01-01	152.000
1921-02-01	251.000
1921-03-01	424.000
1921-04-01	365.000
1921-05-01	338.000
1921-06-01	304.000
1921-07-01	309.000
1921-08-01	422.000
1921-09-01	267.000
1921-10-01	265.000
1921-11-01	272.000
1921-12-01	274.000
1922-01-01	301.000
1922-02-01	436.000
1922-03-01	535.000
1922-04-01	551.000
1922-05-01	559.000
1922-06-01	547.000
1922-07-01	523.000
1922-08-01	553.000
1922-09-01	345.000
1922-10-01	307.000
1922-11-01	318.000
1922-12-01	256.000
1923-01-01	284.000
1923-02-01	401.000
1923-03-01	521.000
1923-04-01	463.000
1923-05-01	489.000
1923-06-01	395.000
1923-07-01	310.000
1923-08-01	292.000
1923-09-01	251.000
1923-10-01	389.000
1923-11-01	272.000
1923-12-01	230.000
1924-01-01	275.000
1924-02-01	433.000
1924-03-01	456.000
1924-04-01	433.000
1924-05-01	422.000
1924-06-01	476.000
1924-07-01	514.000
1924-08-01	459.000
1924-09-01	434.000
1924-10-01	340.000
1924-11-01	233.000
1924-12-01	190.000
1925-01-01	281.000
1925-02-01	412.000
1925-03-01	571.000
1925-04-01	555.000
1925-05-01	434.000
1925-06-01	520.000
1925-07-01	481.000
1925-08-01	461.000
1925-09-01	454.000
1925-10-01	399.000
1925-11-01	269.000
1925-12-01	348.000
1926-01-01	366.000
1926-02-01	442.000
1926-03-01	511.000
1926-04-01	460.000
1926-05-01	450.000
1926-06-01	497.000
1926-07-01	471.000
1926-08-01	459.000
1926-09-01	443.000
1926-10-01	471.000
1926-11-01	372.000
1926-12-01	302.000
1927-01-01	267.000
1927-02-01	358.000
1927-03-01	521.000
1927-04-01	500.000
1927-05-01	481.000
1927-06-01	494.000
1927-07-01	472.000
1927-08-01	459.000
1927-09-01	399.000
1927-10-01	382.000
1927-11-01	314.000
1927-12-01	277.000
1928-01-01	314.000
1928-02-01	313.000
1928-03-01	464.000
1928-04-01	408.000
1928-05-01	382.000
1928-06-01	402.000
1928-07-01	429.000
1928-08-01	481.000
1928-09-01	413.000
1928-10-01	439.000
1928-11-01	398.000
1928-12-01	297.000
1929-01-01	334.000
1929-02-01	380.000
1929-03-01	499.000
1929-04-01	495.000
1929-05-01	422.000
1929-06-01	446.000
1929-07-01	468.000
1929-08-01	495.000
1929-09-01	334.000
1929-10-01	387.000
1929-11-01	304.000
1929-12-01	236.000
1930-01-01	352.000
1930-02-01	329.000
1930-03-01	428.000
1930-04-01	457.000
1930-05-01	455.000
1930-06-01	403.000
1930-07-01	507.000
1930-08-01	360.000
1930-09-01	418.000
1930-10-01	402.000
1930-11-01	343.000
1930-12-01	224.000
1931-01-01	246.000
1931-02-01	302.000
1931-03-01	355.000
1931-04-01	393.000
1931-05-01	346.000
1931-06-01	412.000
1931-07-01	470.000
1931-08-01	410.000
1931-09-01	375.000
1931-10-01	351.000
1931-11-01	247.000
1931-12-01	245.000
1932-01-01	261.000
1932-02-01	265.000
1932-03-01	316.000
1932-04-01	311.000
1932-05-01	343.000
1932-06-01	367.000
1932-07-01	379.000
1932-08-01	398.000
1932-09-01	363.000
1932-10-01	301.000
1932-11-01	243.000
1932-12-01	207.000
1933-01-01	228.000
1933-02-01	226.000
1933-03-01	323.000
1933-04-01	350.000
1933-05-01	396.000
1933-06-01	389.000
1933-07-01	370.000
1933-08-01	381.000
1933-09-01	295.000
1933-10-01	281.000
1933-11-01	241.000
1933-12-01	162.000
1934-01-01	222.000
1934-02-01	256.000
1934-03-01	308.000
1934-04-01	279.000
1934-05-01	317.000
1934-06-01	372.000
1934-07-01	315.000
1934-08-01	290.000
1934-09-01	353.000
1934-10-01	388.000
1934-11-01	298.000
1934-12-01	226.000
1935-01-01	335.000
1935-02-01	301.000
1935-03-01	340.000
1935-04-01	362.000
1935-05-01	399.000
1935-06-01	329.000
1935-07-01	396.000
1935-08-01	350.000
1935-09-01	309.000
1935-10-01	299.000
1935-11-01	248.000
1935-12-01	198.000
1936-01-01	318.000
1936-02-01	335.000
1936-03-01	441.000
1936-04-01	430.000
1936-05-01	334.000
1936-06-01	412.000
1936-07-01	369.000
1936-08-01	305.000
1936-09-01	279.000
1936-10-01	259.000
1936-11-01	231.000
1936-12-01	249.000
1937-01-01	231.000
1937-02-01	314.000
1937-03-01	515.000
1937-04-01	556.000
1937-05-01	410.000
1937-06-01	330.000
1937-07-01	425.000
1937-08-01	420.000
1937-09-01	181.000
1937-10-01	266.000
1937-11-01	293.000
1937-12-01	321.000
1938-01-01	245.000
1938-02-01	290.000
1938-03-01	301.000
1938-04-01	344.000
1938-05-01	343.000
1938-06-01	375.000
1938-07-01	383.000
1938-08-01	392.000
1938-09-01	426.000
1938-10-01	376.000
1938-11-01	292.000
1938-12-01	237.000