- Note:
- Intermittent years, such as 1991, are omitted for notational convenience because the SOEP questionnaires do not contain relevant information in those years. For information with respect to the exact timing of questions, see the main text
- Cells marked in green () indicate that responses are available for the relevant year
- Years marked in red () indicate the years that are used for the complete case analysis (CC)
- Cells marked in blue () indicate that responses are used for the quasi-complete case analysis (QCC)