Is there a stastical database of song popularity anywhere?
 

I'm writing an essay about the popularity of music. And we need sources in our essay.
One of the points I wanted to make was how a song like Paint it Black by The Rolling Stones , released in the 60's, is still being played on the radio while songs composed today like Black and Yellow by Wiz Khalifa were played on the radio for a month and haven't been heard since.
But I need a way to statistically or factually say that.
Any help?

Yes it's call the pop charts
I believe it's updated every week.

Billboard might have what you're looking for.

https://en.wikipedia.org/wiki/Billboard_%28magazine%29

Billboard Charts Legend | Billboard

The 60s was the golden age of rock that is still being propped up by aging baby boomers that did not cast aside the music of their youth like their parents did when they grew up. In one word the radio stations have found a listening base that thinks the music of the 60s and 70s is still relevant............If you need a source for that come over to my house on Sunday and I will sign your paper.

What you're talking about is the classic rock stations that play songs from the 60s and 70s. It's true that these songs have been played over and over again, but if you're trying to illustrate that it's a more popular song than a more current song, you're basically comparing apples to oranges.

Spotify Charts