"Some 19.3 million U.S. viewers watched the series finale of television’s “Game of Thrones” on Sunday - a record audience for the fantasy series, cable channel HBO said."
'Game of Thrones' series finale draws record 19.3 million U.S. viewers: HBO - Reuters https://www.reuters.com/article/us-television-game-of-thrones-audience/game-of-thrones-series-finale-draws-record-19-3-million-u-s-viewers-hbo-idUSKCN1SQ23T