Monthly Passenger-Miles
1935-01-01 10.5000
1935-02-01 10.9000
1935-03-01 10.1000
1935-04-01 10.5000
1935-05-01 10.4000
1935-06-01 11.8000
1935-07-01 11.8000
1935-08-01 12.5000
1935-09-01 11.9000
1935-10-01 10.8000
1935-11-01 10.9000
1935-12-01 12.1000
1936-01-01 12.3000
1936-02-01 12.8000
1936-03-01 11.9000
1936-04-01 12.3000
1936-05-01 12.3000
1936-06-01 14.6000
1936-07-01 15.2000
1936-08-01 15.6000
1936-09-01 14.4000
1936-10-01 13.4000
1936-11-01 13.4000
1936-12-01 14.1000
1937-01-01 13.2000
1937-02-01 13.5000
1937-03-01 12.9000
1937-04-01 13.0000
1937-05-01 13.5000
1937-06-01 15.1000
1937-07-01 15.4000
1937-08-01 15.5000
1937-09-01 14.6000
1937-10-01 13.7000
1937-11-01 13.5000
1937-12-01 14.1000
1938-01-01 13.1000
1938-02-01 12.8000
1938-03-01 11.8000
1938-04-01 12.7000
1938-05-01 12.8000
1938-06-01 14.0000
1938-07-01 14.4000
1938-08-01 13.9000
1938-09-01 13.2000
1938-10-01 12.7000
1938-11-01 12.5000
1938-12-01 13.6000
1939-01-01 12.5000
1939-02-01 12.6000
1939-03-01 11.9000
1939-04-01 12.7000
1939-05-01 13.0000
1939-06-01 14.9000
1939-07-01 15.2000
1939-08-01 14.9000
1939-09-01 14.5000
1939-10-01 13.5000
1939-11-01 12.4000
1939-12-01 13.8000
1940-01-01 13.1000
1940-02-01 13.1000
1940-03-01 12.8000
1940-04-01 12.7000
1940-05-01 13.0000
1940-06-01 14.9000
1940-07-01 14.8000
1940-08-01 15.9000
1940-09-01 15.0000
1940-10-01 13.8000
1940-11-01 13.7000
1940-12-01 15.1000
1941-01-01 14.1000
1941-02-01 14.9000
1941-03-01 14.6000
1941-04-01 14.9000
1941-05-01 15.0000
1941-06-01 16.9000
1941-07-01 17.0000
1941-08-01 18.0000
1941-09-01 16.6000
1941-10-01 16.0000
1941-11-01 15.9000
1941-12-01 17.9000
1942-01-01 18.0000
1942-02-01 19.1000
1942-03-01 18.4000
1942-04-01 20.3000
1942-05-01 21.8000
1942-06-01 23.8000
1942-07-01 24.5000
1942-08-01 26.4000
1942-09-01 26.5000
1942-10-01 26.2000
1942-11-01 27.0000
1942-12-01 28.2000
1943-01-01 26.8000
1943-02-01 28.2000
1943-03-01 28.3000
1943-04-01 30.3000
1943-05-01 31.2000
1943-06-01 34.3000
1943-07-01 33.8000
1943-08-01 34.4000