| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| when were amphetamines invented | 1.64 | 1 | 1426 | 74 | 31 |
| when | 0.45 | 0.2 | 3581 | 27 | 4 |
| were | 0.09 | 0.5 | 1098 | 16 | 4 |
| amphetamines | 0.64 | 0.4 | 1946 | 42 | 12 |
| invented | 1 | 0.7 | 8418 | 47 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when were amphetamines invented | 1.68 | 0.8 | 1582 | 49 |
