How to display a user’s score overview when values often tend towards the maximum?

At the end of the day, my users get a score ranging from 0 to 100 depending on how healthy their meals were. 100 being the perfect score, most users following a healthy diet get more than 80 every day.

To fix this, in the week’s review I am currently zooming on the relevant values:

Are there better ways to do this ? Should I use a scoring system with less range?