| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| events that happened in 1998 | 0.91 | 0.2 | 3604 | 9 |
| events that happened in 1989 | 1.6 | 0.4 | 1270 | 28 |
| events that happened in 1992 | 1.06 | 0.6 | 7551 | 71 |
| events that happened in 1997 | 1.28 | 0.5 | 7465 | 79 |
| events that happened in 1988 | 1.69 | 0.7 | 2242 | 83 |
| events that happened in 1995 | 1.48 | 0.9 | 7504 | 80 |
| events that happened in 1987 | 1.95 | 1 | 5004 | 66 |
| events that happened in 1981 | 1.92 | 0.8 | 5028 | 49 |
| events that happened in 1983 | 0.77 | 0.7 | 6370 | 82 |
| events that happened in 1984 | 1.87 | 0.6 | 6870 | 36 |
| events that happened in 1980s | 0.39 | 0.4 | 8912 | 70 |
| events that happened in 1985 | 1.62 | 0.2 | 5765 | 92 |
| events that happened in 1982 | 0.83 | 0.8 | 7277 | 65 |
| events that happened in 1986 | 0.5 | 1 | 9904 | 92 |
| what events happened in 1998 | 1.89 | 0.9 | 5825 | 59 |
| major events that happened in 1998 | 0.22 | 0.3 | 3434 | 80 |
| famous events that happened in 1998 | 1.32 | 0.8 | 6775 | 55 |
| important events that happened in 1998 | 1.85 | 0.3 | 1689 | 23 |
| big events that happened in 1998 | 0.44 | 0.4 | 2826 | 65 |
| world events that happened in 1998 | 1.77 | 0.2 | 1483 | 52 |
