So that it says, done 3 times per week and 1 time below goal, and not only 0% success rate for all time, and 3/4 for this week.

I want to know how often I'm doing it over time, not just for this week.

NOTE: This would tie in to another user's idea of having a custom goal like do x times per y days. It should show the frequency as you've done it I times per I days on average, not just per that week, etc.