"TABLE 2 Sample Sizes (Unweighted) and Standard Errors (SE) of Estimates Weighted to Reflect Total U.S. Population Age 16+ for Figure 2",,,,,,,,,,,,,, Bicycled in past 30 days ,Total,Male,Female,16-24,25-34,35-44,45-54,55-64,65+,White,Black,Other,Hispanic, Sample size,"2,525","1,325","1,200",450,562,683,463,235,132,"2,001",158,129,237, Standard errors of estimates ,0.02,0.04,0.03,0.06,0.06,0.04,0.05,0.05,0.07,0.03,0.09,0.09,0.09, "SOURCE: National Survey of Pedestrian and Bicyclist Attitudes and Behaviors, 2002. National Highway Traffic Safety Administration (NHTSA) and Bureau of Transportation Statistics (BTS).",,,,,,,,,,,,,, ,,,,,,,,,,,,,,