Shows That Were A top 10 Hit,Then Slip From The Top 30,Then Returned To The Top 10

[USATVFAN]

Name Shows That Were a Top 10 Hit In the Begining Of It Run,The Slipped From The top 30,Then Became A Top 10 Hit Again Before Slipping From The Top 30s Again.
For Example
The Jeffersoms Ratings
1974-1975 Season 1 Ratings #4
1975-1976 Season 2 Ratings #21
1976-1977 Sasson 3 Ratings #24
1977-1978 Season 4 Ratings #56
1978-1979 Season 5 Ratings #49
1979-1980 Season 6 Ratings #8
1980-1981 Season 7 Ratings #6
1981-1982 Season 8 Ratings #3
1982-1983 Season 9 Ratings #12
1983-1984 Season 10 Ratings #19
1984-1985 Season 11 Ratings #56

[Dean Winchester]

don't know all the season-ending numbers, but Gunsmoke is another classic example here. It was #1 in the late 50's/early 60's, then plummetted in the ratings, then in the late 1960's, the show had a renaissance and spent six additional seasons in the top 10, peaking at #2 before falling down once more and finally leaving the air