| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what happened during 1990 | 0.2 | 0.3 | 1919 | 16 | 25 |
| what | 1.93 | 0.2 | 7038 | 56 | 4 |
| happened | 1.3 | 0.5 | 6022 | 3 | 8 |
| during | 0.03 | 0.2 | 8594 | 5 | 6 |
| 1990 | 1.39 | 0.4 | 4056 | 51 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what happened during 1990 | 1.18 | 0.5 | 4799 | 48 |
| what happened during 1980 | 1.55 | 0.6 | 308 | 32 |
| what happened during 1991 | 1.23 | 0.9 | 3632 | 89 |
| what happened during 1998 | 1.22 | 0.3 | 8371 | 11 |
| what happened during 1999 | 0.07 | 0.8 | 5795 | 55 |
| what happened during 1996 | 1.24 | 0.3 | 7743 | 93 |
| what happened during 1997 | 0.05 | 0.9 | 3725 | 65 |
| what happened during 1900 | 0.68 | 1 | 7167 | 26 |
| what happened during 1902 | 0.81 | 0.2 | 4043 | 22 |
| what happened during 1904 | 1.37 | 0.7 | 4582 | 78 |
| what happened during 1970 | 1.39 | 0.9 | 6848 | 10 |
| what happened during 1909 | 0.74 | 0.9 | 572 | 51 |
| what happened during 1960 | 1.89 | 0.2 | 778 | 12 |
| what happened during 1989 | 0.19 | 0.2 | 4707 | 45 |
| what happened during the 1990s | 0.33 | 0.3 | 2570 | 46 |
