Betfair Exchange Matched/Traded Volume Data

I want the Betfair Exchange WebSocket feed to include matched volume and traded volume data, such as totalMatched, marketMatched, selectionMatched, tradedVolume by price level, and lastPriceTraded. Currently, I can only see back/lay prices and depth fields (depthHome, depthLayHome). This data is important for building a pre-match football analysis system and understanding market activity beyond just current liquidity.