Month Thousands Of Long Tons 1919-01-01 661.000 1919-02-01 626.000 1919-03-01 691.000 1919-04-01 647.000 1919-05-01 671.000 1919-06-01 658.000 1919-07-01 641.000 1919-08-01 521.000 1919-09-01 581.000 1919-10-01 445.000 1919-11-01 624.000 1919-12-01 632.000 1920-01-01 665.000 1920-02-01 645.000 1920-03-01 699.000 1920-04-01 671.000 1920-05-01 739.000 1920-06-01 726.000 1920-07-01 750.000 1920-08-01 752.000 1920-09-01 741.000 1920-10-01 533.000 1920-11-01 403.000 1920-12-01 682.000 1921-01-01 642.000 1921-02-01 464.000 1921-03-01 386.000 1921-04-01 60.0000 1921-05-01 14.0000 1921-06-01 1.00000 1921-07-01 10.0000 1921-08-01 94.0000 1921-09-01 158.000 1921-10-01 236.000 1921-11-01 272.000 1921-12-01 275.000 1922-01-01 288.000 1922-02-01 300.000 1922-03-01 390.000 1922-04-01 394.000 1922-05-01 408.000 1922-06-01 369.000 1922-07-01 399.000 1922-08-01 412.000 1922-09-01 430.000 1922-10-01 482.000 1922-11-01 494.000 1922-12-01 534.000 1923-01-01 568.000 1923-02-01 543.000 1923-03-01 634.000 1923-04-01 652.000 1923-05-01 714.000 1923-06-01 693.000 1923-07-01 655.000 1923-08-01 600.000 1923-09-01 559.000 1923-10-01 593.000 1923-11-01 598.000 1923-12-01 627.000 1924-01-01 632.000 1924-02-01 613.000 1924-03-01 669.000 1924-04-01 618.000 1924-05-01 651.000 1924-06-01 608.000 1924-07-01 616.000 1924-08-01 589.000 1924-09-01 569.000 1924-10-01 586.000 1924-11-01 584.000 1924-12-01 580.000 1925-01-01 569.000 1925-02-01 542.000 1925-03-01 608.000 1925-04-01 570.000 1925-05-01 568.000 1925-06-01 510.000 1925-07-01 493.000 1925-08-01 444.000 1925-09-01 449.000 1925-10-01 474.000 1925-11-01 494.000 1925-12-01 503.000 1926-01-01 534.000 1926-02-01 502.000 1926-03-01 568.000 1926-04-01 539.000 1926-05-01 89.0000 1926-06-01 42.0000 1926-07-01 18.0000 1926-08-01 14.0000 1926-09-01 12.0000 1926-10-01 13.0000 1926-11-01 13.0000 1926-12-01 98.0000 1927-01-01 435.000 1927-02-01 568.000 1927-03-01 672.000 1927-04-01 680.000 1927-05-01 720.000 1927-06-01 650.000 1927-07-01 646.000 1927-08-01 596.000 1927-09-01 592.000 1927-10-01 596.000 1927-11-01 576.000 1927-12-01 559.000 1928-01-01 560.000 1928-02-01 551.000 1928-03-01 593.000 1928-04-01 555.000 1928-05-01 592.000 1928-06-01 564.000 1928-07-01 538.000 1928-08-01 519.000 1928-09-01 504.000 1928-10-01 544.000 1928-11-01 544.000 1928-12-01 540.000 1929-01-01 564.000 1929-02-01 520.000 1929-03-01 590.000 1929-04-01 611.000 1929-05-01 655.000 1929-06-01 658.000 1929-07-01 672.000 1929-08-01 682.000 1929-09-01 665.000 1929-10-01 689.000 1929-11-01 631.000 1929-12-01 643.000 1930-01-01 650.000 1930-02-01 607.000 1930-03-01 666.000 1930-04-01 620.000 1930-05-01 614.000 1930-06-01 563.000 1930-07-01 486.000 1930-08-01 417.000 1930-09-01 425.000 1930-10-01 415.000 1930-11-01 384.000 1930-12-01 350.000 1931-01-01 337.000 1931-02-01 318.000 1931-03-01 357.000 1931-04-01 323.000 1931-05-01 346.000 1931-06-01 324.000 1931-07-01 317.000 1931-08-01 275.000 1931-09-01 248.000 1931-10-01 284.000 1931-11-01 296.000 1931-12-01 331.000 1932-01-01 330.000 1932-02-01 324.000 1932-03-01 336.000 1932-04-01 317.000 1932-05-01 315.000 1932-06-01 311.000 1932-07-01 293.000 1932-08-01 259.000 1932-09-01 260.000 1932-10-01 276.000 1932-11-01 268.000 1932-12-01 284.000 1933-01-01 287.000 1933-02-01 271.000 1933-03-01 332.000 1933-04-01 325.000 1933-05-01 340.000 1933-06-01 346.000 1933-07-01 344.000 1933-08-01 363.000 1933-09-01 360.000 1933-10-01 373.000 1933-11-01 375.000 1933-12-01 409.000 1934-01-01 441.000 1934-02-01 414.000 1934-03-01 504.000 1934-04-01 496.000 1934-05-01 528.000 1934-06-01 515.000 1934-07-01 527.000 1934-08-01 503.000 1934-09-01 500.000 1934-10-01 527.000 1934-11-01 508.000 1934-12-01 514.000 1935-01-01 521.000 1935-02-01 483.000 1935-03-01 554.000 1935-04-01 526.000 1935-05-01 559.000 1935-06-01 529.000 1935-07-01 547.000 1935-08-01 543.000 1935-09-01 530.000 1935-10-01 544.000 1935-11-01 530.000 1935-12-01 559.000 1936-01-01 596.000 1936-02-01 585.000 1936-03-01 634.000 1936-04-01 630.000 1936-05-01 661.000 1936-06-01 644.000 1936-07-01 666.000 1936-08-01 636.000 1936-09-01 651.000 1936-10-01 670.000 1936-11-01 643.000 1936-12-01 671.000 1937-01-01 651.000 1937-02-01 604.000 1937-03-01 680.000 1937-04-01 681.000 1937-05-01 696.000 1937-06-01 699.000 1937-07-01 729.000 1937-08-01 714.000 1937-09-01 727.000 1937-10-01 770.000 1937-11-01 762.000 1937-12-01 784.000 1938-01-01 761.000 1938-02-01 693.000 1938-03-01 715.000 1938-04-01 661.000 1938-05-01 634.000 1938-06-01 542.000 1938-07-01 508.000 1938-08-01 443.000 1938-09-01 430.000 1938-10-01 469.000 1938-11-01 462.000 1938-12-01 446.000 1939-01-01 501.000 1939-02-01 516.000 1939-03-01 604.000 1939-04-01 609.000 1939-05-01 692.000 1939-06-01 716.000 1939-07-01 744.000