3.10 How much did the members of the household spend/consume/use on the following, which was NOT included in the package, during this last domestic trip?
a. Airfare
Categories
Value
Category
0
1800
3800
20000
888888
Not Applicable
999999
Unspecified
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.