1. Yields are a measure of average revenues collected per seat, per passenger kilometer . 2. From 1992 to 2005, passenger kilometers increased 5.2 % per year. 3. In 2007, 101 million passengers were transported 490 million passenger kilometers by rail transit. 4. Domestic revenue passenger kilometers rose 11 . 8 percent. 5. Yield per revenue passenger kilometers in the year rose to 10.9 percent from 10.6 percent. 6. Likewise, on a monthly basis, passenger kilometers used grew by 0.94 % from 12.58 million last September. 7. Passenger traffic measures revenue passenger kilometers , or the total number of kilometers flown by all paying passengers. 8. Here, the units are in per 100 p-km ( read as person kilometer or passenger kilometer ). 9. Domestic revenue passenger kilometers rose 11.8 percent. 10. Delta is the third-biggest U . S . carrier after United and American, measured by revenue passenger kilometers .
