| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| montreal protocol year | 1.25 | 0.3 | 8620 | 19 | 22 |
| montreal | 0.83 | 0.6 | 221 | 87 | 8 |
| protocol | 0.93 | 0.3 | 4372 | 42 | 8 |
| year | 0.16 | 0.5 | 9906 | 32 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| montreal protocol year | 1.14 | 0.6 | 2532 | 89 |
| montreal protocol year amended | 0.98 | 0.5 | 870 | 93 |
| montreal protocol amendment years | 1.51 | 0.8 | 2668 | 1 |
| what year was the montreal protocol signed | 1.83 | 0.2 | 2695 | 67 |
| montreal protocol signed in which year | 0.92 | 0.2 | 8075 | 43 |
| what year was the montreal protocol | 1.13 | 0.1 | 4319 | 56 |
| montreal protocol draft year | 1 | 0.4 | 1884 | 44 |
| montreal protocol implication year | 0.09 | 0.5 | 7427 | 94 |
| what year was the montreal protocol enacted | 0.91 | 0.6 | 2443 | 89 |
| year of montreal protocol | 0.6 | 0.3 | 8459 | 85 |
| montreal protocol in which year | 1.57 | 0.6 | 1629 | 28 |
| montreal amendment to the montreal protocol | 1.64 | 0.5 | 9895 | 44 |
| amendments to the montreal protocol | 0.27 | 0.5 | 6791 | 66 |
| when was the montreal protocol passed | 0.06 | 0.1 | 2825 | 36 |
| montreal protocol was signed in 1987 to | 1.67 | 0.4 | 8650 | 73 |
