Producer Price Index by Commodity: Telecommunication, Cable, and Internet User Services: Local Business Wired Telephone Service (WPU37120101)

U.S. Bureau of Labor Statistics, Producer Price Index by Commodity: Telecommunication, Cable, and Internet User Services: Local Business Wired Telephone Service [WPU37120101], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/WPU37120101, June 27, 2022.