| 1999 | ||
| Participating Stations | : | 47 JOTA-Stations |
| 1998 | ||
| Participating Stations | : | 56 JOTA-Stations |
| 1997 | ||
| Participating Stations | : | 59 JOTA-Stations |
| 1996 | ||
| Participating Stations | : | 59 JOTA-Stations |
| 1995 | ||
| Participating Stations | : | 52 JOTA-Stations |
| 1994 | ||
| Participating Stations | : | 60 JOTA-Stations |
| 1993 | ||
| Participating Stations | : | 63 JOTA-Stations |
| 1992 | ||
| Participating Stations | : | 60 JOTA-Stations |
| 1991 | ||
| Participating Stations | : | 71 JOTA-Stations |
| 1990 | ||
| Participating Stations | : | 69 JOTA-Stations |
| 1989 | ||
| Participating Stations | : | 71 JOTA-Stations |
| 1988 | ||
| Participating Stations | : | 68 JOTA-Stations |