https://fred.stlouisfed.org/series/NYSTHPI
Edit: DuckDuckGo seems to have served me a terrible example, further digging shows some examples which don't even need looking up, its clear that pricing has plummeted.
NYC has grown by about 1.5 million people over the last 30 years.
You're just being rude for no reason, which is also why I'm now rude to you. You could almost call it rudeflation, tomorrow we'll probably cause a rudeness singularity