| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| 16th amendment to the us constitution 1913 | 1.82 | 0.1 | 707 | 98 | 42 |
| 16th | 0.44 | 1 | 4939 | 97 | 4 |
| amendment | 1.24 | 0.3 | 2458 | 41 | 9 |
| to | 0.23 | 0.4 | 4211 | 85 | 2 |
| the | 0.13 | 0.8 | 5931 | 85 | 3 |
| us | 0.28 | 1 | 5452 | 7 | 2 |
| constitution | 0.16 | 0.1 | 6863 | 61 | 12 |
| 1913 | 1.63 | 0.1 | 2167 | 71 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| 16th amendment to the us constitution 1913 | 0.24 | 0.1 | 8698 | 36 |
| effect of 16th amendment 1913 | 0.36 | 0.9 | 8170 | 41 |
| what caused the 16th amendment 1913 | 0.08 | 0.6 | 2486 | 95 |
| the 16th amendment to the constitution | 1.32 | 0.9 | 1555 | 91 |
| the sixteenth amendment to the constitution | 1.2 | 0.1 | 3278 | 62 |
| us constitution 16th amendment | 1.08 | 0.6 | 3544 | 84 |
| history of the 16th amendment | 0.66 | 0.3 | 1594 | 93 |
| the 16th amendment established | 0.56 | 0.8 | 559 | 55 |
| what was the 16th amendment | 1 | 0.3 | 165 | 59 |
| when was the 16th amendment created | 1.17 | 0.9 | 364 | 25 |
| when was the 16th amendment made | 0.14 | 0.3 | 1076 | 85 |
| what did the 16th amendment establish | 0.41 | 1 | 4790 | 50 |
| explanation of the 16th amendment | 1.68 | 0.8 | 2433 | 83 |
| what was the sixteenth amendment | 0.19 | 1 | 419 | 15 |
