When analyzing your survey on the 'over time' chart, you'll now see the exact number of responses you got.
Ok, tell me how
Go to the Analyze tab of your survey. Then, scroll to the 'over time' graph. Once you get there, you should spot bars of different heights. Now, hover over one of them. You’ll see the date, score, and the actual number of responses you received.
Why it matters
First, you can finally connect your score with the number of responses in each period. Plus, see how they change in time. This should help you make better conclusions from your research. And avoid drawing false ones based on insufficient data.