About 90% of the veteran network series saw their ratings drop in the 2018-19 season

The Hollywood Reporter

Only 10% of veteran series, or 10 out of 102, increased or held on to their 18-49 demo viewership from the previous season. While Sunday Night Football experienced a minuscule drop, Will & Grace's suffered heavy demo viewership losses. ALSO: The Big Bang Theory and Manifest were among shows getting the biggest boost from delayed viewing.