NEW YORK (AP) -- Prime-time viewership numbers compiled by Nielsen for May 13-19. Listings include the week's ranking and viewership.

1. "NCIS," CBS, 18.79 million.

2. "The Big Bang Theory," CBS, 15.48 million.

3. "American Idol" (Thursday), Fox, 14.31 million.

4. "NCIS: Los Angeles," CBS, 13.52 million.

5. "Dancing With the Stars," ABC, 13.33 million.

6. "American Idol" (Wednesday), Fox, 12.11 million.

7. "Dancing With the Stars Results," ABC, 11.87 million.

8. "The Big Bang Theory" (Thursday, 8:30 p.m.), CBS, 11.84 million.

9. "The Voice" (Monday), NBC, 11.29 million.

10. "Castle," ABC, 11.16 million.

11. "Criminal Minds," CBS, 10.56 million.

12. "The Voice" (Tuesday), NBC, 10.47 million.

13. "60 Minutes," CBS, 10.19 million.

14. "Modern Family," ABC, 10.03 million.

15. "CSI: Crime Scene Investigation," CBS, 9.53 million.

16. "Billboard Music Awards," ABC, 9.48 million.

17. "Scandal," ABC, 9.12 million.

18. "Grey's Anatomy," ABC, 8.99 million.

19. "Elementary," CBS, 8.98 million.

20. "2 Broke Girls," CBS, 8.94 million.

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ABC is owned by The Walt Disney Co.; CBS is a division of CBS Corp.; Fox is a unit of News Corp.; NBC is owned by NBC Universal.

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