Month	Millions Of Passenger-Miles
1921-07-01	3126.00
1921-08-01	3109.00
1921-09-01	2807.00
1921-10-01	2425.00
1921-11-01	2181.00
1921-12-01	2385.00
1922-01-01	2194.00
1922-02-01	1930.00
1922-03-01	2097.00
1922-04-01	2211.00
1922-05-01	2302.00
1922-06-01	2753.00
1922-07-01	2955.00
1922-08-01	2933.00
1922-09-01	2718.00
1922-10-01	2423.00
1922-11-01	2267.00
1922-12-01	2605.00
1923-01-01	2394.00
1923-02-01	2074.00
1923-03-01	2309.00
1923-04-01	2317.00
1923-05-01	2466.00
1923-06-01	2975.00
1923-07-01	3177.00
1923-08-01	3346.00
1923-09-01	3008.00
1923-10-01	2528.00
1923-11-01	2313.00
1923-12-01	2699.00
1924-01-01	2420.00
1924-02-01	2189.00
1924-03-01	2278.00
1924-04-01	2253.00
1924-05-01	2345.00
1924-06-01	2773.00
1924-07-01	2923.00
1924-08-01	3158.00
1924-09-01	2647.00
1924-10-01	2237.00
1924-11-01	2095.00
1924-12-01	2400.00
1925-01-01	2335.00
1925-02-01	2036.00
1925-03-01	2071.00
1925-04-01	2066.00
1925-05-01	2274.00
1925-06-01	2721.00
1925-07-01	2973.00
1925-08-01	3207.00
1925-09-01	2779.00
1925-10-01	2362.00
1925-11-01	2148.00
1925-12-01	2460.00
1926-01-01	2356.00
1926-02-01	2061.00
1926-03-01	2090.00
1926-04-01	2126.00
1926-05-01	2283.00
1926-06-01	2688.00
1926-07-01	2951.00
1926-08-01	2980.00
1926-09-01	2681.00
1926-10-01	2240.00
1926-11-01	2039.00
1926-12-01	2400.00
1927-01-01	2252.00
1927-02-01	1939.00
1927-03-01	1986.00
1927-04-01	2048.00
1927-05-01	2163.00
1927-06-01	2484.00
1927-07-01	2792.00
1927-08-01	2763.00
1927-09-01	2508.00
1927-10-01	2040.00
1927-11-01	1860.00
1927-12-01	2173.00
1928-01-01	2053.00
1928-02-01	1833.00
1928-03-01	1842.00
1928-04-01	1874.00
1928-05-01	1926.00
1928-06-01	2400.00
1928-07-01	2510.00
1928-08-01	2605.00
1928-09-01	2318.00
1928-10-01	1886.00
1928-11-01	1714.00
1928-12-01	2029.00
1929-01-01	1941.00
1929-02-01	1787.00
1929-03-01	1904.00
1929-04-01	1756.00
1929-05-01	1891.00
1929-06-01	2330.00
1929-07-01	2408.00
1929-08-01	2618.00
1929-09-01	2142.00
1929-10-01	1777.00
1929-11-01	1639.00
1929-12-01	1987.00
1930-01-01	1824.00
1930-02-01	1606.00
1930-03-01	1597.00
1930-04-01	1560.00
1930-05-01	1654.00
1930-06-01	1934.00
1930-07-01	2009.00
1930-08-01	2115.00
1930-09-01	1654.00
1930-10-01	1413.00
1930-11-01	1300.00
1930-12-01	1488.00
1931-01-01	1383.00
1931-02-01	1252.00
1931-03-01	1225.00
1931-04-01	1319.00
1931-05-01	1374.00
1931-06-01	1508.00
1931-07-01	1614.00
1931-08-01	1572.00
1931-09-01	1389.00
1931-10-01	1065.00
1931-11-01	983.000
1931-12-01	1194.00
1932-01-01	1035.00
1932-02-01	949.000
1932-03-01	948.000
1932-04-01	892.000
1932-05-01	995.000
1932-06-01	1064.00
1932-07-01	1220.00
1932-08-01	1157.00
1932-09-01	1124.00
1932-10-01	822.000
1932-11-01	769.000
1932-12-01	1014.00
1933-01-01	778.000
1933-02-01	688.000
1933-03-01	642.000
1933-04-01	741.000
1933-05-01	805.000
1933-06-01	1149.00
1933-07-01	1265.00
1933-08-01	1364.00
1933-09-01	1362.00
1933-10-01	1208.00
1933-11-01	887.000
1933-12-01	1144.00
1934-01-01	973.000
1934-02-01	895.000
1934-03-01	997.000
1934-04-01	1016.00
1934-05-01	992.000
1934-06-01	1272.00
1934-07-01	1420.00
1934-08-01	1531.00
1934-09-01	1349.00
1934-10-01	1182.00
1934-11-01	953.000
1934-12-01	1296.00
1935-01-01	1133.00
1935-02-01	1008.00
1935-03-01	1029.00
1935-04-01	1036.00
1935-05-01	1044.00
1935-06-01	1255.00
1935-07-01	1356.00
1935-08-01	1532.00
1935-09-01	1294.00
1935-10-01	1129.00
1935-11-01	1105.00
1935-12-01	1442.00
1936-01-01	1332.00
1936-02-01	1233.00
1936-03-01	1177.00
1936-04-01	1233.00
1936-05-01	1241.00
1936-06-01	1581.00
1936-07-01	1918.00
1936-08-01	1950.00
1936-09-01	1724.00
1936-10-01	1567.00
1936-11-01	1441.00
1936-12-01	1836.00
1937-01-01	1676.00
1937-02-01	1472.00
1937-03-01	1561.00
1937-04-01	1516.00
1937-05-01	1563.00
1937-06-01	1806.00
1937-07-01	2099.00
1937-08-01	2073.00
1937-09-01	1868.00
1937-10-01	1638.00
1937-11-01	1469.00
1937-12-01	1801.00
1938-01-01	1619.00
1938-02-01	1330.00
1938-03-01	1313.00
1938-04-01	1386.00
1938-05-01	1338.00
1938-06-01	1568.00
1938-07-01	1785.00
1938-08-01	1621.00
1938-09-01	1492.00
1938-10-01	1295.00
1938-11-01	1225.00
1938-12-01	1603.00
1939-01-01	1439.00
1939-02-01	1240.00
1939-03-01	1286.00
1939-04-01	1351.00
1939-05-01	1381.00
1939-06-01	1752.00
1939-07-01	2006.00
1939-08-01	1958.00
1939-09-01	1767.00
1939-10-01	1509.00
1939-11-01	1262.00
1939-12-01	1695.00
1940-01-01	1573.00
1940-02-01	1383.00
1940-03-01	1471.00
1940-04-01	1350.00
1940-05-01	1376.00
1940-06-01	1735.00
1940-07-01	1905.00
1940-08-01	2166.00
1940-09-01	1804.00
1940-10-01	1588.00
1940-11-01	1443.00
1940-12-01	1978.00
1941-01-01	1876.00
1941-02-01	1708.00
1941-03-01	1875.00
1941-04-01	1840.00
1941-05-01	1812.00
1941-06-01	2223.00
1941-07-01	2417.00
1941-08-01	2608.00
1941-09-01	2167.00
1941-10-01	2051.00
1941-11-01	1956.00
1941-12-01	2703.00
1942-01-01	2705.00
1942-02-01	2533.00
1942-03-01	2680.00
1942-04-01	3056.00
1942-05-01	3436.00
1942-06-01	3830.00
1942-07-01	4354.00
1942-08-01	4963.00
1942-09-01	5104.00
1942-10-01	5098.00
1942-11-01	5261.00
1942-12-01	5913.00
1943-01-01	5471.00
1943-02-01	5261.00
1943-03-01	6040.00
1943-04-01	6312.00
1943-05-01	6576.00
1943-06-01	7351.00
1943-07-01	7871.00
1943-08-01	8135.00
1943-09-01	7428.00
1943-10-01	7268.00
1943-11-01	7126.00
1943-12-01	7715.00
1944-01-01	7136.00
1944-02-01	6863.00
1944-03-01	7386.00
1944-04-01	7548.00
1944-05-01	7525.00
1944-06-01	7964.00
1944-07-01	8211.00
1944-08-01	8136.00
1944-09-01	7626.00
1944-10-01	7335.00
1944-11-01	7030.00
1944-12-01	7472.00
1945-01-01	6905.00
1945-02-01	6266.00
1945-03-01	6595.00
1945-04-01	6375.00
1945-05-01	6896.00
1945-06-01	7553.00
1945-07-01	7687.00
1945-08-01	7760.00
1945-09-01	7142.00
1945-10-01	7501.00
1945-11-01	7522.00
1945-12-01	8125.00
1946-01-01	6977.00
1946-02-01	5629.00
1946-03-01	5466.00
1946-04-01	4965.00
1946-05-01	4276.00
1946-06-01	4912.00
1946-07-01	5190.00
1946-08-01	5230.00
1946-09-01	4421.00
1946-10-01	3953.00
1946-11-01	3777.00
1946-12-01	4045.00
1947-01-01	3606.00
1947-02-01	2999.00
1947-03-01	2992.00
1947-04-01	2991.00
1947-05-01	3241.00
1947-06-01	3576.00
1947-07-01	3906.00
1947-08-01	4009.00
1947-09-01	3327.00
1947-10-01	2942.00
1947-11-01	2875.00
1947-12-01	3461.00
1948-01-01	3125.00
1948-02-01	2720.00
1948-03-01	2752.00