Monthly Millions Of Passenger-Miles
1921-07-01 511.000
1921-08-01 514.000
1921-09-01 486.000
1921-10-01 486.000
1921-11-01 476.000
1921-12-01 460.000
1922-01-01 515.000
1922-02-01 468.000
1922-03-01 497.000
1922-04-01 491.000
1922-05-01 520.000
1922-06-01 517.000
1922-07-01 541.000
1922-08-01 532.000
1922-09-01 514.000
1922-10-01 534.000
1922-11-01 494.000
1922-12-01 509.000
1923-01-01 541.000
1923-02-01 493.000
1923-03-01 520.000
1923-04-01 535.000
1923-05-01 534.000
1923-06-01 532.000
1923-07-01 574.000
1923-08-01 538.000
1923-09-01 544.000
1923-10-01 552.000
1923-11-01 520.000
1923-12-01 521.000
1924-01-01 546.000
1924-02-01 516.000
1924-03-01 538.000
1924-04-01 526.000
1924-05-01 522.000
1924-06-01 545.000
1924-07-01 548.000
1924-08-01 514.000
1924-09-01 565.000
1924-10-01 536.000
1924-11-01 519.000
1924-12-01 532.000
1925-01-01 555.000
1925-02-01 512.000
1925-03-01 549.000
1925-04-01 530.000
1925-05-01 524.000
1925-06-01 561.000
1925-07-01 571.000
1925-08-01 551.000
1925-09-01 556.000
1925-10-01 546.000
1925-11-01 551.000
1925-12-01 524.000
1926-01-01 555.000
1926-02-01 518.000
1926-03-01 553.000
1926-04-01 536.000
1926-05-01 534.000
1926-06-01 565.000
1926-07-01 552.000
1926-08-01 560.000
1926-09-01 568.000
1926-10-01 556.000
1926-11-01 564.000
1926-12-01 543.000
1927-01-01 582.000
1927-02-01 532.000
1927-03-01 559.000
1927-04-01 535.000
1927-05-01 560.000
1927-06-01 541.000
1927-07-01 554.000
1927-08-01 564.000
1927-09-01 558.000
1927-10-01 570.000
1927-11-01 556.000
1927-12-01 538.000
1928-01-01 578.000
1928-02-01 536.000
1928-03-01 541.000
1928-04-01 550.000
1928-05-01 544.000
1928-06-01 532.000
1928-07-01 572.000
1928-08-01 533.000
1928-09-01 569.000
1928-10-01 579.000
1928-11-01 543.000
1928-12-01 549.000
1929-01-01 584.000
1929-02-01 546.000
1929-03-01 556.000
1929-04-01 579.000
1929-05-01 560.000
1929-06-01 564.000
1929-07-01 606.000
1929-08-01 559.000
1929-09-01 618.000
1929-10-01 588.000
1929-11-01 559.000
1929-12-01 579.000
1930-01-01 589.000
1930-02-01 547.000
1930-03-01 578.000
1930-04-01 560.000
1930-05-01 543.000
1930-06-01 578.000
1930-07-01 559.000
1930-08-01 519.000
1930-09-01 594.000
1930-10-01 546.000
1930-11-01 528.000
1930-12-01 526.000
1931-01-01 532.000
1931-02-01 496.000
1931-03-01 534.000
1931-04-01 512.000
1931-05-01 495.000
1931-06-01 526.000
1931-07-01 501.000
1931-08-01 504.000
1931-09-01 511.000
1931-10-01 476.000
1931-11-01 485.000
1931-12-01 447.000
1932-01-01 470.000
1932-02-01 452.000
1932-03-01 458.000
1932-04-01 417.000
1932-05-01 430.000
1932-06-01 399.000
1932-07-01 393.000
1932-08-01 399.000
1932-09-01 405.000
1932-10-01 409.000
1932-11-01 387.000
1932-12-01 367.000
1933-01-01 392.000
1933-02-01 359.000
1933-03-01 358.000
1933-04-01 348.000
1933-05-01 368.000
1933-06-01 349.000
1933-07-01 368.000
1933-08-01 353.000
1933-09-01 359.000
1933-10-01 376.000
1933-11-01 336.000
1933-12-01 347.000
1934-01-01 372.000
1934-02-01 339.000
1934-03-01 345.000
1934-04-01 360.000
1934-05-01 348.000
1934-06-01 340.000
1934-07-01 359.000
1934-08-01 324.000
1934-09-01 347.000
1934-10-01 361.000
1934-11-01 326.000
1934-12-01 339.000
1935-01-01 358.000
1935-02-01 333.000
1935-03-01 341.000
1935-04-01 350.000
1935-05-01 333.000
1935-06-01 338.000
1935-07-01 353.000
1935-08-01 323.000
1935-09-01 365.000
1935-10-01 345.000
1935-11-01 330.000
1935-12-01 345.000
1936-01-01 358.000
1936-02-01 349.000
1936-03-01 362.000
1936-04-01 344.000
1936-05-01 338.000
1936-06-01 363.000
1936-07-01 346.000
1936-08-01 361.000
1936-09-01 341.000
1936-10-01 345.000
1936-11-01 357.000
1936-12-01 328.000
1937-01-01 354.000
1937-02-01 325.000
1937-03-01 360.000
1937-04-01 341.000
1937-05-01 339.000
1937-06-01 357.000
1937-07-01 339.000
1937-08-01 356.000
1937-09-01 333.000
1937-10-01 339.000
1937-11-01 348.000
1937-12-01 326.000
1938-01-01 359.000
1938-02-01 315.000
1938-03-01 333.000
1938-04-01 314.000
1938-05-01 332.000
1938-06-01 309.000
1938-07-01 321.000
1938-08-01 341.000
1938-09-01 321.000
1938-10-01 354.000
1938-11-01 329.000
1938-12-01 323.000
1939-01-01 352.000
1939-02-01 318.000
1939-03-01 332.000
1939-04-01 330.000
1939-05-01 344.000
1939-06-01 323.000
1939-07-01 348.000
1939-08-01 325.000
1939-09-01 330.000
1939-10-01 357.000
1939-11-01 329.000
1939-12-01 325.000
1940-01-01 359.000
1940-02-01 326.000
1940-03-01 333.000
1940-04-01 342.000
1940-05-01 323.000
1940-06-01 325.000
1940-07-01 338.000
1940-08-01 314.000
1940-09-01 340.000
1940-10-01 334.000
1940-11-01 329.000
1940-12-01 334.000
1941-01-01 340.000
1941-02-01 320.000
1941-03-01 353.000
1941-04-01 330.000
1941-05-01 329.000
1941-06-01 347.000
1941-07-01 339.000
1941-08-01 329.000
1941-09-01 360.000
1941-10-01 346.000
1941-11-01 343.000
1941-12-01 352.000
1942-01-01 389.000
1942-02-01 363.000
1942-03-01 390.000
1942-04-01 371.000
1942-05-01 387.000
1942-06-01 409.000
1942-07-01 411.000
1942-08-01 432.000
1942-09-01 396.000
1942-10-01 410.000
1942-11-01 401.000
1942-12-01 402.000
1943-01-01 443.000
1943-02-01 407.000
1943-03-01 443.000
1943-04-01 403.000
1943-05-01 433.000
1943-06-01 462.000
1943-07-01 471.000
1943-08-01 474.000
1943-09-01 423.000
1943-10-01 438.000
1943-11-01 443.000
1943-12-01 421.000
1944-01-01 444.000
1944-02-01 415.000
1944-03-01 436.000
1944-04-01 426.000
1944-05-01 454.000
1944-06-01 441.000
1944-07-01 496.000
1944-08-01 462.000
1944-09-01 441.000
1944-10-01 455.000
1944-11-01 438.000
1944-12-01 437.000
1945-01-01 468.000
1945-02-01 428.000
1945-03-01 453.000
1945-04-01 451.000
1945-05-01 451.000
1945-06-01 462.000
1945-07-01 497.000
1945-08-01 441.000
1945-09-01 422.000
1945-10-01 462.000
1945-11-01 435.000
1945-12-01 448.000
1946-01-01 476.000
1946-02-01 450.000
1946-03-01 489.000
1946-04-01 506.000
1946-05-01 451.000
1946-06-01 475.000
1946-07-01 521.000
1946-08-01 482.000
1946-09-01 505.000
1946-10-01 513.000
1946-11-01 491.000
1946-12-01 498.000
1947-01-01 513.000
1947-02-01 486.000
1947-03-01 536.000
1947-04-01 499.000
1947-05-01 488.000
1947-06-01 520.000
1947-07-01 506.000
1947-08-01 472.000
1947-09-01 528.000
1947-10-01 508.000
1947-11-01 467.000
1947-12-01 487.000
1948-01-01 528.000
1948-02-01 478.000
1948-03-01 519.000
1948-04-01 473.000
1948-05-01 473.000
1948-06-01 492.000
1948-07-01 462.000
1948-08-01 492.000
1948-09-01 474.000
1948-10-01 483.000
1948-11-01 499.000
1948-12-01 482.000
1949-01-01 513.000
1949-02-01 465.000
1949-03-01 486.000
1949-04-01 455.000
1949-05-01 463.000
1949-06-01 429.000
1949-07-01 423.000
1949-08-01 448.000
1949-09-01 435.000
1949-10-01 467.000
1949-11-01 422.000
1949-12-01 452.000
1950-01-01 451.000
1950-02-01 401.000
1950-03-01 433.000
1950-04-01 412.000
1950-05-01 432.000
1950-06-01 392.000
1950-07-01 405.000
1950-08-01 397.000
1950-09-01 401.000
1950-10-01 445.000
1950-11-01 410.000
1950-12-01 408.000
1951-01-01 446.000
1951-02-01 392.000
1951-03-01 412.000
1951-04-01 425.000
1951-05-01 400.000
1951-06-01 385.000
1951-07-01 404.000
1951-08-01 385.000
1951-09-01 387.000
1951-10-01 439.000
1951-11-01 395.000
1951-12-01 400.000
1952-01-01 423.000
1952-02-01 396.000
1952-03-01 427.000
1952-04-01 401.000
1952-05-01 388.000
1952-06-01 389.000
1952-07-01 373.000
1952-08-01 361.000
1952-09-01 412.000
1952-10-01 403.000
1952-11-01 380.000
1952-12-01 402.000
1953-01-01 413.000
1953-02-01 386.000
1953-03-01 421.000
1953-04-01 393.000
1953-05-01 389.000
1953-06-01 426.000
1953-07-01 362.000
1953-08-01 386.000
1953-09-01 383.000
1953-10-01 403.000
1953-11-01 410.000
1953-12-01 385.000
1954-01-01 405.000
1954-02-01 382.000
1954-03-01 432.000
1954-04-01 389.000
1954-05-01 383.000
1954-06-01 400.000
1954-07-01 365.000
1954-08-01 396.000
1954-09-01 385.000
1954-10-01 395.000
1954-11-01 418.000
1954-12-01 389.000
1955-01-01 427.000
1955-02-01 384.000
1955-03-01 411.000
1955-04-01 392.000
1955-05-01 412.000
1955-06-01 375.000
1955-07-01 361.000
1955-08-01 404.000
1955-09-01 391.000
1955-10-01 425.000
1955-11-01 399.000
1955-12-01 394.000
1956-01-01 431.000
1956-02-01 392.000
1956-03-01 406.000
1956-04-01 421.000
1956-05-01 399.000
1956-06-01 383.000