The top 20 prime-time programs for Dec. 17-23

Prime-time viewership numbers compiled by Nielsen for Dec. 17-23. Listings include the week's ranking and viewership.

1. "NCIS," CBS, 19.59 million.

2. NFL Football: San Francisco at Seattle, NBC, 19.50 million.

3. "NCIS: Los Angeles," CBS, 15.48 million.

4. "The Voice" (Tuesday), NBC, 14.13 million.

5. "Sunday Night NFL Pre-Kick," NBC, 13.67 million.

6. "The Voice" (Monday), NBC, 13.37 million.

7. "The Big Bang Theory," CBS, 10.95 million.

8. "The OT," Fox, 10.94 million.

9. "Mike & Molly," CBS, 10.79 million.

10. "Hawaii Five-0," CBS, 10.54 million.

11. "Football Night in America," NBC, 10.23 million.

12. "2 Broke Girls," CBS, 10.22 million.

13. "Vegas," CBS, 9.82 million.

14. "The X Factor" (Thursday), Fox, 9.66 million.

15. "Person of Interest," CBS, 9.40 million.

16. "60 Minutes Presents," CBS, 8.89 million.

17. "How I Met Your Mother," CBS, 8.70 million.

18. "Two and a Half Men," CBS, 8.67 million.

19. "The X Factor" (Wednesday), Fox, 8.35 million.

20. "A White House Christmas", NBC, 8.29 million.

___

CBS is a division of CBS Corp.; Fox is a unit of News Corp.; NBC is owned by NBC Universal.