Why Did You Do It by Stretch first appeared on the Israeli foreign-music chart on 7 Dec 1975, entering at #25. It peaked at #5 on 18 Jan 1976. In total it spent 9 weeks on the chart, last charting on 1 Feb 1976.
| Wk | Date | Pos |
|---|---|---|
| 1 | 7 Dec 1975 | 25 |
| 2 | 14 Dec 1975 | 20 |
| 3 | 21 Dec 1975 | 13 |
| 4 | 28 Dec 1975 | 9 |
| 5 | 4 Jan 1976 | 7 |
| 6 | 11 Jan 1976 | 6 |
| 7 | 18 Jan 1976 | 5 |
| 8 | 25 Jan 1976 | 12 |
| 9 | 1 Feb 1976 | 20 |