Air Carrier Financial Statistics,, ,, Dollars in thousands,2000,2001 Airline Industry,, Operating Revenue,"$135,504,500 ","$119,355,700 " Operating Expense,"$128,275,100 ","$129,671,900 " Operating Profit (Loss),"$7,229,400 ","($10,316,200)" Net Income (Loss),"$2,630,100 ","($7,875,400)" ,, Majors,, Operating Revenue,"$117,391,500 ","$104,483,200 " Operating Expense,"$110,853,900 ","$114,031,400 " Operating Profit (Loss),"$6,537,600 ","($9,548,200)" Net Income (Loss),"$2,632,300 ","($7,185,800)" ,, Nationals,, Operating Revenue,"$12,014,300 ","$9,631,100 " Operating Expense,"$11,483,800 ","$10,064,500 " Operating Profit (Loss),"$530,500 ","($433,400)" Net Income (Loss),"$48,400 ","($451,300)" ,, Large Regionals,, Operating Revenue,"$893,500 ","$904,700 " Operating Expense,"$976,600 ","$962,700 " Operating Profit (Loss),"($83,100)","($58,000)" Net Income (Loss),"($147,200)","($71,800)" ,, Medium Regionals,, Operating Revenue,"$539,400 ","$414,900 " Operating Expense,"$525,400 ","$448,800 " Operating Profit (Loss),"$14,000 ","($33,900)" Net Income (Loss),"$47,200 ","($42,100)" ,, Small Certificated,, Operating Revenue,"$3,108,900 ","$2,764,100 " Operating Expense,"$2,808,400 ","$2,929,300 " Operating Profit (Loss),"$300,500 ","($165,200)" Net Income (Loss),"$156,700 ","($75,800)" ,, Commuters,, Operating Revenue,"$1,556,900 ","$1,157,700 " Operating Expense,"$1,627,000 ","$1,235,200 " Operating Profit (Loss),"($70,100)","($77,500)" Net Income (Loss),"($12,900)","($48,600)" Nationals have annual operating revenue from $100 million to $1 billion.,, Large Regionals have operating revenue of $20 million to $99 million.,, Medium Regionals have operating revenue of less than $20 million.,,,,,,,, Small Certificateds operate domestic flights only with aircraft of 60 seats or less.,,,,,,,, Commuters operate scheduled service with a minimum of five round trips per week on at least one route.,,,,,,,,