For more information regarding the index, please visit, http://www.standardandpoors.com/indices/sp-case-shiller-home-price-indices/en/us/?indexId=spusa-cashpidff--p-us----. There is more information about home price sales pairs in the Methodology section. Copyright, 2014, Standard & Poor's Financial Services LLC. Reprinted with permission.
Source: S&P Dow Jones Indices LLC
Release: S&P/Case-Shiller Home Price Indices
S&P Dow Jones Indices LLC, S&P Case-Shiller 20-City Home Price Sales Pair Counts© [SPCS20RPSNSA], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/SPCS20RPSNSA, February 12, 2016.