The 10 most popular TV shows of the year so far, according to Nielsen ratings

Series run: 4 seasons (2014-present)

Summary: "A drama about the local field office that investigates criminal cases involving military personnel in The Big Easy, a city known for its music, entertainment and decadence."

Series run: 8 seasons (2010-present)

Summary: "A drama about a multi-generational family of cops dedicated to New York City law enforcement."

Series run: 2 seasons (2016-present)

Summary: "Stars Michael Weatherly as Dr. Jason Bull in a drama inspired by the early career of Dr. Phil McGraw, the founder of one of the most prolific trial consulting firms of all time."

Series run: 1 season (2017-present)

Summary: "Freddie Highmore plays Shaun Murphy, a young surgeon with autism and savant syndrome, relocates from a quiet country life to join a prestigious hospital's surgical unit."

Series run: 1 season (2017-present)

Summary: "Follows the 9-year-old Sheldon Cooper as he navigates living with his family in East Texas and going to high school."

Series run: 15 seasons (2003-present)

Summary: "'NCIS' (Naval Criminal Investigative Service) is more than just an action drama. With liberal doses of humor, it's a show that focuses on the sometimes complex and always amusing dynamics of a team forced to work together in high-stress situations."

Series run: 2 seasons (2016-present)

Summary: "Everyone has a family. And every family has a story. 'This Is Us' chronicles the Pearson family across the decades."

Series run: 11 seasons (2007-present)

Summary: "Leonard and Sheldon are brilliant physicists – geniuses in the laboratory but socially challenged everywhere else. Enter beautiful, street-smart neighbor Penny, who aims to teach them a thing or two about life."

Series run: 10 seasons (1988-1997; 2018)

Summary: "Explore life, death and everything in between through the relatable, hilarious and brutally honest lens of the Conner household."