"Table 2. Rating of Congestion While Commuting, 2006 and 2007",,,,
Week prior to interview,2006 percent,95% CI ,2007 percent,95% CI
Very to moderately congested ,46.7,± 4.5% n=683 ,40.4,± 4.5% n=605
Slight to no congestion ,53.3,± 4.5% n=683 ,59.6,± 4.5% n=605 
Over the last 12 months,,,,
 Better ,10.3,± 2.9% n=680 ,8.8,± 2.7% n=607
 Stayed the same ,62.4,± 4.5% n=680 ,65.4,± 4.3% n=607
 Worse ,27.3,± 3.9% n=680 ,25.8,± 3.9% n=607 
KEY: CI = Confidence interval.,,,,
"SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Omnibus Household Surveys, November 2006 and 2007.",,,,