| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| us coal production by year | 0.58 | 0.5 | 7616 | 85 | 26 |
| us | 1.67 | 0.5 | 6771 | 9 | 2 |
| coal | 0.81 | 0.3 | 6505 | 6 | 4 |
| production | 0.29 | 0.9 | 7297 | 23 | 10 |
| by | 0.48 | 0.5 | 7215 | 42 | 2 |
| year | 0.83 | 0.9 | 5180 | 57 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| us coal production by year | 1.93 | 0.8 | 2652 | 3 |
