Song: "I Don't Know Why"
Artist: Rolling Stones
Peak position on the Cashbox Singles chart: #37
Number of weeks on the Cashbox Singles chart: 8
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| June 7, 1975 | 80 | I Don't Know Why | Rolling Stones | Abkco 4701 |
| June 14, 1975 | 70 | I Don't Know Why | Rolling Stones | Abkco 4701 |
| June 21, 1975 | 60 | I Don't Know Why | Rolling Stones | Abkco 4701 |
| June 28, 1975 | 50 | I Don't Know Why | Rolling Stones | Abkco 4701 |
| July 5, 1975 | 44 | I Don't Know Why | Rolling Stones | Abkco 4701 |
| July 12, 1975 | 38 | I Don't Know Why | Rolling Stones | Abkco 4701 |
| July 19, 1975 | 37 | I Don't Know Why | Rolling Stones | Abkco 4701 |
| July 26, 1975 | 45 | I Don't Know Why | Rolling Stones | Abkco 4701 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.