"Median Percent of Personal Income Spent on Commuting by Income Group, 1999",,,,,
"Less than $8,000",9.5%,,,,
"$8,000 to $14,999",6.0%,,,,
"$15,000 to $21,999",4.6%,,,,
"$22,000 to $29,999",4.1%,,,,
"$30,000 to $44,999",3.5%,,,,
"$45,000 and Higher",2.2%,,,,
Total Population,3.9%,,,,
Source: U.S. Census Bureau Data from the Survey of Income and Program Participation,,,,,