Restricted Cash and Short-term Investments
Millions
		2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011
AMR Corp		-	535	783	527	478	510	468	428	459	460	450	738
Continental Airlines Inc**		-	30	62	170	211	241	265	179	190	164	-	-
Delta Air Lines Inc		-	-	134	207	348	870	750	520	429	435	440	341
Northwest Airlines Corp		35	100	100	126	156	600	424	725	196	-	-	-
UAL Corp**		-	-	462	679	877	643	341	325	54	128	37	40
US Airways Group Inc I		-	-	150	151	99	-	-	-	-	-	-	-
US Airways Group Inc II		-	-	-	-	-	-	1	2	186	480	364	365
America West Holdings Corp		-	-	-	43	41	-	-	-	-	-	-	-
--sub Network		35	665	1,691	1,903	2,210	2,864	2,249	2,179	1,514	1,667	1,291	1,484
Southwest Airlines Co		-	-	-	-	-	-	-	-	-	-	-	-
JetBlue Airways Corp		-	-	-	-	-	-	-	-	-	-	-	-
AirTran Holdings Inc		26	27	34	10	8	19	25	30	86	52	49	-
Frontier Airlines Holdings Inc*		9	12	15	25	28	35	43	74	134	-	-	-
--sub LCC		35	39	49	35	36	55	68	104	220	52	49	-
Alaska Air Group Inc		-	-	-	-	-	-	-	-	-	-	-	-
Hawaiian Holdings Inc		-	27	23	-	1	53	54	39	28	26	5	31
Midwest Air Group Inc		-	-	15	26	29	39	40	-	-	-	-	-
-- sub Other		-	27	38	26	30	92	93	39	28	26	5	31
Total All Sectors		70	731	1,778	1,963	2,276	3,011	2,410	2,321	1,763	1,745	1,345	1,515
* Frontier Airlines Inc before 2006. Year end March 31 treated as the year before.
** United and Continental are assumed as a single carrier beginning October 1, 2010
Note: Zero value might also mean data not reported.
Data Source:  SEC 10K Filings