| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| disasters in 1999 | 1.87 | 0.3 | 1700 | 10 | 17 |
| disasters | 0.77 | 0.2 | 3794 | 77 | 9 |
| in | 1.5 | 0.7 | 1946 | 61 | 2 |
| 1999 | 0.83 | 0.6 | 5783 | 78 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| disasters in 1999 | 1.95 | 0.8 | 1521 | 59 |
| disasters in 1995 | 1.19 | 0.9 | 8751 | 88 |
| disasters in 1993 | 0.08 | 0.3 | 2812 | 64 |
| disasters in 1990 | 0.75 | 1 | 568 | 68 |
| disasters in 1989 | 1.78 | 0.7 | 3225 | 28 |
| disasters in 1910 | 1.95 | 0.7 | 980 | 2 |
| mining disasters between 1800 and 1999 | 1.7 | 0.7 | 2259 | 23 |
| tunnel 5 fire was a major disaster in 1999 | 0.84 | 1 | 8245 | 52 |
| natural disasters in 1999 | 0.94 | 0.1 | 5291 | 62 |
