| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how many nfl teams were there in 1960 | 0.28 | 0.8 | 787 | 9 |
| how many nfl teams were there in 1965 | 0.96 | 0.8 | 809 | 76 |
| how many nfl teams were there in 1968 | 1.99 | 0.9 | 2830 | 2 |
| how many nfl teams were there in 1970 | 0.52 | 0.7 | 1403 | 7 |
| how many nfl teams were there in 1980 | 1.41 | 0.3 | 5878 | 83 |
| how many nfl teams were there in 1967 | 0.47 | 0.9 | 8273 | 4 |
| how many nfl teams were there in 1966 | 1.15 | 0.3 | 3603 | 54 |
| how many nfl teams were there in 1969 | 1.3 | 0.5 | 551 | 50 |
| how many nfl teams were there in 1990 | 1 | 0.3 | 9808 | 6 |
| how many nfl teams were there in 1955 | 1.38 | 0.6 | 6616 | 9 |
| how many teams were in the nfl in 1960 | 0.17 | 1 | 1063 | 6 |
