Producer Price Index by Commodity: Travel Arrangement Services (Partial): Arrangement of International Flights (WPU4711)

U.S. Bureau of Labor Statistics, Producer Price Index by Commodity: Travel Arrangement Services (Partial): Arrangement of International Flights [WPU4711], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/WPU4711, September 26, 2022.