Response options: SG: Missing;DE: Inapplicable;RU: Inappropriate response{Inap, Not asked, Not applicable, No answer, Don´t know, Mentioned, Not mentioned
Response options: Break off, Legal skip, Interviewer error, (Refuse to answer), (Don’t know), The paper work involved is too expensive, The paper work involved is too hard to complete, They do not want to pay taxes, They do not want to deal with regulations, Other
Response options: BH: Missing; DE: Inapplicable; RU: Inappropriate response{In, Not asked in survey, Not applicable, No answer, Don´t know, Agree strongly, Agree, Disagree, Strongly disagree