|Amount of Confidence||All Adults||Fliers||Non-fliers|
|Estimate (percent)||Standard Error (percent)||Sample Size||Estimate (percent)||Standard Error (percent)||Sample Size||Estimate (percent)||Standard Error (percent)||Sample Size|
|A great deal of/total||35.7||1.9||301||31.3||3.0||97||38.0||2.4||204|
KEY: NA = Not applicable
NOTES: Percentages may not sum to 100 percent due to independent rounding. All estimates are weighted to represent U.S. noninstitutionalized adult population (18 and older).
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Omnibus Household Survey, December 2004.