| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what happened during 1997 | 1.8 | 0.7 | 9502 | 58 | 25 |
| what | 1.19 | 0.5 | 4314 | 63 | 4 |
| happened | 1.06 | 0.5 | 6887 | 7 | 8 |
| during | 0.15 | 0.2 | 734 | 47 | 6 |
| 1997 | 0.56 | 0.3 | 5183 | 12 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what happened during 1997 | 0.71 | 1 | 8541 | 26 |
| what happened during 1987 | 0.24 | 0.1 | 4501 | 5 |
| what happened during 1977 | 2 | 0.4 | 7813 | 56 |
| what happened during 1991 | 1.73 | 0.2 | 7672 | 45 |
| what happened during 1998 | 0.42 | 0.3 | 9175 | 76 |
| what happened during 1990 | 0.53 | 0.1 | 8213 | 68 |
| what happened during 1999 | 1.07 | 0.5 | 9617 | 38 |
| what happened during 1996 | 1.9 | 0.9 | 7180 | 75 |
| what happened during 1978 | 0.11 | 1 | 7320 | 50 |
| what happened during 1973 | 1.46 | 0.1 | 7158 | 91 |
| what happened during 1976 | 0.78 | 0.4 | 3841 | 42 |
| what happened during 1970 | 1.22 | 0.6 | 1717 | 45 |
| what happened during 1971 | 0.07 | 0.3 | 5521 | 39 |
| what happened during 1972 | 0.33 | 0.7 | 1962 | 20 |
