Historical price data


Does anyone know where I could get data for average rents and co-op sales prices for studios, 1-bed, and 2-bed aprts in Brooklyn over the past 10 years?
I’ve been able to get bits and pieces for certain years, but mostly nothing. I’d like to prove my theory that rents have stayed relatively flat compared to the skyrocketing sales prices. I’d also like to throw in how those prices compare to the median income of people who live in Brooklyn.
Thanks

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