If so, how much do you usually have left?
Asking about the profits on activities or trades. Based on information
recorded in question 17, the interviewer should check income and expenditure data for each
specific activity or trade. For example, in a preliminary estimation of some activities or trades we
see the income is bigger than expenditures but in question 16 the response is "no", the
interviewer should then suggest to the respondent that this seems irrational. Profit (question 17)
must be calculated by the subtraction of revenues (question 11) from expenditures