Top-rated United States television networks by season

The Big Four have topped the season, whereas others like The CW have not.

1. NBC - 1950-1951 (one season)
2. CBS - 1951-1961 (ten seasons)
3. NBC - 1961-1962 (one season)
4. CBS - 1962-1964 (two seasons)
5. NBC - 1964-1967 (three seasons)
6. CBS - 1967-1968 (one season)
7. NBC - 1968-1970 (two seasons)
8. ABC - 1970-1971 (one season)
9. CBS - 1971-1976 (five seasons)
10. ABC - 1976-1979 (three seasons)
11. CBS - 1979-1984 (five seasons)
12. ABC - 1984-1985 (one season)
13. NBC - 1985-1991 (six seasons)
14. CBS - 1991-1994 (three seasons)
15. NBC - 1994-1999 (five seasons)
16. ABC - 1999-2000 (one season)
17. CBS - 2000-2001 (one season)
18. NBC - 2001-2002 (one season)
19. CBS - 2002-2005 (three seasons)
20. Fox - 2005-2011 (six seasons)
21. NBC - 2011-2012 (one season)
22. CBS - 2012-2013 (one season)
23. NBC - 2013-2015 (two seasons)
24. CBS - 2015-2018 (three seasons)
25. NBC - 2018-present (seven seasons to date)