| Wk | Date | Pos |
|---|---|---|
| 1 | 9 Jun 1980 | 7 |
| 2 | 16 Jun 1980 | 4 |
| 3 | 23 Jun 1980 | 2 |
| 4 | 30 Jun 1980 | 2 |
| 5 | 7 Jul 1980 | 2 |
| 6 | 14 Jul 1980 | 1 |
| 7 | 21 Jul 1980 | 2 |
| 8 | 28 Jul 1980 | 2 |
| 9 | 4 Aug 1980 | 5 |
| 10 | 11 Aug 1980 | 8 |
| 11 | 18 Aug 1980 | 13 |
| 12 | 25 Aug 1980 | 19 |
| 13 | 1 Sep 1980 | 25 |
| 14 | 8 Sep 1980 | 32 |
| 15 | 15 Sep 1980 | 37 |