Month Thousands Of Long Tons 1919-01-01 718.000 1919-02-01 734.000 1919-03-01 758.000 1919-04-01 668.000 1919-05-01 755.000 1919-06-01 631.000 1919-07-01 618.000 1919-08-01 474.000 1919-09-01 718.000 1919-10-01 433.000 1919-11-01 695.000 1919-12-01 692.000 1920-01-01 754.000 1920-02-01 798.000 1920-03-01 840.000 1920-04-01 794.000 1920-05-01 846.000 1920-06-01 845.000 1920-07-01 790.000 1920-08-01 709.000 1920-09-01 885.000 1920-10-01 544.000 1920-11-01 505.000 1920-12-01 747.000 1921-01-01 493.000 1921-02-01 484.000 1921-03-01 359.000 1921-04-01 71.0000 1921-05-01 6.00000 1921-06-01 3.00000 1921-07-01 117.000 1921-08-01 434.000 1921-09-01 429.000 1921-10-01 405.000 1921-11-01 443.000 1921-12-01 381.000 1922-01-01 328.000 1922-02-01 419.000 1922-03-01 549.000 1922-04-01 404.000 1922-05-01 462.000 1922-06-01 400.000 1922-07-01 473.000 1922-08-01 528.000 1922-09-01 556.000 1922-10-01 565.000 1922-11-01 601.000 1922-12-01 546.000 1923-01-01 634.000 1923-02-01 707.000 1923-03-01 802.000 1923-04-01 749.000 1923-05-01 821.000 1923-06-01 768.000 1923-07-01 624.000 1923-08-01 568.000 1923-09-01 695.000 1923-10-01 702.000 1923-11-01 750.000 1923-12-01 653.000 1924-01-01 690.000 1924-02-01 768.000 1924-03-01 817.000 1924-04-01 712.000 1924-05-01 810.000 1924-06-01 652.000 1924-07-01 689.000 1924-08-01 526.000 1924-09-01 645.000 1924-10-01 678.000 1924-11-01 673.000 1924-12-01 551.000 1925-01-01 605.000 1925-02-01 652.000 1925-03-01 685.000 1925-04-01 598.000 1925-05-01 652.000 1925-06-01 585.000 1925-07-01 590.000 1925-08-01 477.000 1925-09-01 639.000 1925-10-01 647.000 1925-11-01 654.000 1925-12-01 607.000 1926-01-01 636.000 1926-02-01 704.000 1926-03-01 784.000 1926-04-01 661.000 1926-05-01 46.0000 1926-06-01 34.0000 1926-07-01 32.0000 1926-08-01 52.0000 1926-09-01 96.0000 1926-10-01 94.0000 1926-11-01 98.0000 1926-12-01 319.000 1927-01-01 731.000 1927-02-01 819.000 1927-03-01 950.000 1927-04-01 850.000 1927-05-01 885.000 1927-06-01 747.000 1927-07-01 687.000 1927-08-01 643.000 1927-09-01 777.000 1927-10-01 699.000 1927-11-01 699.000 1927-12-01 605.000 1928-01-01 626.000 1928-02-01 764.000 1928-03-01 793.000 1928-04-01 644.000 1928-05-01 753.000 1928-06-01 709.000 1928-07-01 667.000 1928-08-01 648.000 1928-09-01 719.000 1928-10-01 756.000 1928-11-01 762.000 1928-12-01 683.000 1929-01-01 762.000 1929-02-01 775.000 1929-03-01 860.000 1929-04-01 809.000 1929-05-01 840.000 1929-06-01 831.000 1929-07-01 805.000 1929-08-01 753.000 1929-09-01 848.000 1929-10-01 890.000 1929-11-01 815.000 1929-12-01 661.000 1930-01-01 771.000 1930-02-01 776.000 1930-03-01 826.000 1930-04-01 696.000 1930-05-01 692.000 1930-06-01 600.000 1930-07-01 621.000 1930-08-01 451.000 1930-09-01 581.000 1930-10-01 512.000 1930-11-01 434.000 1930-12-01 337.000 1931-01-01 402.000 1931-02-01 486.000 1931-03-01 500.000 1931-04-01 397.000 1931-05-01 435.000 1931-06-01 429.000 1931-07-01 429.000 1931-08-01 357.000 1931-09-01 400.000 1931-10-01 457.000 1931-11-01 459.000 1931-12-01 425.000 1932-01-01 430.000 1932-02-01 481.000 1932-03-01 463.000 1932-04-01 433.000 1932-05-01 417.000 1932-06-01 459.000 1932-07-01 430.000 1932-08-01 362.000 1932-09-01 430.000 1932-10-01 438.000 1932-11-01 474.000 1932-12-01 430.000 1933-01-01 444.000 1933-02-01 483.000 1933-03-01 578.000 1933-04-01 510.000 1933-05-01 600.000 1933-06-01 569.000 1933-07-01 568.000 1933-08-01 551.000 1933-09-01 669.000 1933-10-01 668.000 1933-11-01 695.000 1933-12-01 669.000 1934-01-01 711.000 1934-02-01 708.000 1934-03-01 830.000 1934-04-01 717.000 1934-05-01 780.000 1934-06-01 758.000 1934-07-01 718.000 1934-08-01 667.000 1934-09-01 735.000 1934-10-01 812.000 1934-11-01 766.000 1934-12-01 654.000 1935-01-01 758.000 1935-02-01 770.000 1935-03-01 841.000 1935-04-01 809.000 1935-05-01 853.000 1935-06-01 770.000 1935-07-01 803.000 1935-08-01 760.000 1935-09-01 856.000 1935-10-01 907.000 1935-11-01 903.000 1935-12-01 812.000 1936-01-01 912.000 1936-02-01 938.000 1936-03-01 980.000 1936-04-01 984.000 1936-05-01 963.000 1936-06-01 966.000 1936-07-01 974.000 1936-08-01 873.000 1936-09-01 1027.00 1936-10-01 1060.00 1936-11-01 1001.00 1936-12-01 1019.00 1937-01-01 999.000 1937-02-01 996.000 1937-03-01 1110.00 1937-04-01 1080.00 1937-05-01 1047.00 1937-06-01 1106.00 1937-07-01 1059.00 1937-08-01 988.000 1937-09-01 1163.00 1937-10-01 1134.00 1937-11-01 1178.00 1937-12-01 1104.00 1938-01-01 1081.00 1938-02-01 1058.00 1938-03-01 1116.00 1938-04-01 939.000 1938-05-01 957.000 1938-06-01 776.000 1938-07-01 683.000 1938-08-01 659.000 1938-09-01 755.000 1938-10-01 855.000 1938-11-01 860.000 1938-12-01 656.000