| Variable | Year | Supplement |
|---|---|---|
| NHIOTHER | 1996 | Health insurance |
| NHIOTHER | 1995 | Health insurance |
| NHIOTHER | 1994 | Health insurance |
| NHIOTHER | 1993 | Health insurance |
| SOTHREA | 1989 | Health insurance |
| SOTHREA | 1986 | Health insurance |
| SOTHREA | 1984 | Health insurance |
| SOTHREA | 1983 | Health insurance |
| SOTHREA | 1982 | Health insurance |
| SOTHREA | 1980 | Health insurance |
| SOTHREA | 1976 | Health insurance |