Here is the list of the words with the meaning.
How frequent is it?
- itsumo(いつも):always > 100%
- taitei(たいてい):usually > 70 to 80 %
- tokidoki(ときどき):sometimes > around 50%
- hotondo(ほとんど): hardly > around 20%
- mettani(めったに):rarely > less than 10%
The percentage is just a rough indication.