I'm not sure how to quantify the question. Is new music something beyond Jazz, RocknRoll, pop or classical? If I listen to one of the jazz standards from the 50s performed by a more recent artist with there own twist would that be new? I don't usually like a covers of an established song performed almost note for note from the original but I do enjoy a more modern interpterion of quite a few songs.
I don't enjoy modern pop much as it's pretty much the same from artist to artist so I wouldn't classify that as new but I'm now able do to the invention of streaming listen to music from all over the world. So "new to me" is more what I chose. I have over 300 albums that I collected from my youth that while they are still good not what I choose to listen to on a day to day basis.
My assertion looking at the above posts that most of us don't fit that assumption that we still only listen to Boston, Queen or the Who and while they're still enjoyable we've expanded our horizons to include lots of other styles of music that just weren't available to us 40 years ago. My wife on he other hand who doesn't get stereo at all sings along on a Bluetooth speaker the music she listened to 40 years ago and is perfectly content.