| Wk | Date | Pos |
|---|---|---|
| 1 | 14 Jul 1980 | 6 |
| 2 | 21 Jul 1980 | 4 |
| 3 | 28 Jul 1980 | 4 |
| 4 | 4 Aug 1980 | 1 |
| 5 | 11 Aug 1980 | 1 |
| 6 | 18 Aug 1980 | 1 |
| 7 | 25 Aug 1980 | 1 |
| 8 | 1 Sep 1980 | 1 |
| 9 | 8 Sep 1980 | 1 |
| 10 | 15 Sep 1980 | 1 |
| 11 | 22 Sep 1980 | 1 |
| 12 | 29 Sep 1980 | 3 |
| 13 | 6 Oct 1980 | 6 |
| 14 | 13 Oct 1980 | 10 |
| 15 | 20 Oct 1980 | 17 |
| 16 | 27 Oct 1980 | 9 |
| 17 | 3 Nov 1980 | 31 |
| 18 | 10 Nov 1980 | 37 |