The following table shows America's TV favorites every year beginning in 1970.
The TV 'year' generally consists of September to June for the show's original air play.

RANK	TITLE	NETWORK
1970-71
1	Marcus Welby, M.D.	ABC
2	The Flip Wilson Show	NBC
3	Here's Lucy	CBS
4	Ironside	NBC
5	Gunsmoke	CBS
6	The ABC Movie of the Week	ABC
7	Hawaii Five-O	CBS
8	Medical Center	CBS
9	Bonanza	NBC
10	The F.B.I.	ABC
11	The Mod Squad	ABC
12	Adam-12	NBC
13	Rowan and Martin's Laugh-In (tie)	NBC
13	The Wonderful World of Disney (tie)	NBC
15	Mayberry F.F.D.	CBS
16	Hee Haw	CBS
17	Mannix	CBS
18	The Man from Shiloh	NBC
19	My Three Sons	CBS
20	The Doris Day Show	CBS
1971-72
1	All in the Family	CBS
2	The Flip Wilson Show	NBC
3	Marcus Welby, M.D.	ABC
4	Gunsmoke	CBS
5	The ABC Movie of the Week	ABC
6	Sanford and Son	NBC
7	Mannix	CBS
8	Funny Face (tie)	CBS
8	Adam-12 (tie)	NBC
10	The Mary Tyler Moore Show	CBS
11	Here's Lucy	CBS
12	Hawaii Five-0	CBS
13	Medical Center	CBS
14	The NBC Mystery Movie	NBC
15	Ironside	NBC
16	The Partridge Family	ABC
17	The F.B.I.	ABC
18	The New Dick Van Dyke Show	CBS
19	The Wonderful World of Disney	NBC
20	Bonanza	NBC
1972-73
1	All in the Family	CBS
2	Sanford and Son	NBC
3	Hawaii Five-0	CBS
4	Maude	CBS
5	Briget Loves Bernie (tie)	CBS
5	The NBC Sunday Mystery Movie (tie)	NBC
7	The Mary Tyler Moore Show (tie)	CBS
7	Gunsmoke (tie)	CBS
9	The Wonderful World of Disney	NBC
10	Ironside	NBC
11	Adam-12	NBC
12	The Flip Wilson Show	NBC
13	Marcus Welby, M.D.	ABC
14	Cannon	CBS
15	Here's Lucy	CBS
16	The Bob Newhart Show	CBS
17	ABC Tuesday Movie of the Week	ABC
18	NFL Monday Night Football	ABC
19	The Partridge Family (tie)	ABC
19	The Waltons (tie)	CBS
1973-74
1	All in the Family	CBS
2	The Waltons	CBS
3	Sanford and Son	NBC
4	M*A*S*H	CBS
5	Hawaii Five-0	CBS
6	Maude	CBS
7	Kojak (tie)	CBS
7	The Sonny and Cher Comedy Hour (tie)	CBS
9	The Mary Tyler Moore Show (tie)	CBS
9	Cannon (tie)	CBS
11	The Six Million Dollar Man	ABC
12	The Bob Newhart Show (tie)	CBS
12	The Wonderful World of Disney (tie)	NBC
14	The NBC Sunday Mystery Movie	NBC
15	Gunsmoke	CBS
16	Happy Days	ABC
17	Good Times (tie)	CBS
17	Barnaby Jones (tie)	CBS
19	NFL Monday Night Football (tie)	ABC
19	The CBS Friday Night Movie (tie)	CBS
1974-75
1	All in the Family	CBS
2	Sanford and Son	NBC
3	Chico and the Man	NBC
4	The Jeffersons	CBS
5	M*A*S*H	CBS
6	Rhoda	CBS
7	Good Times	CBS
8	The Waltons	CBS
9	Maude	CBS
10	Hawaii Five-0	CBS
11	The Mary Tyler Moore Show	CBS
12	The Rockford Files	NBC
13	Little House on the Prairie	NBC
14	Kojak	CBS
15	Police Woman	NBC
16	S.W.A.T.	ABC
17	The Bob Newhart Show	CBS
18	The Wonderful World of Disney (tie)	NBC
18	The Rookies (tie)	ABC
20	Mannix	CBS
1975-76
1	All in the Family	CBS
2	Rich Man, Poor Man	ABC
3	Laverne and Shirley	ABC
4	Maude	CBS
5	The Bionic Woman	ABC
6	Phyllis	CBS
7	Sanford and Son (tie)	NBC
7	Rhoda (tie)	CBS
9	The Six Million Dollar Man	ABC
10	The ABC Monday Night Movie	ABC
11	Happy Days	ABC
12	One Day at a Time	CBS
13	The ABC Sunday Night Movie	ABC
14	The Waltons (tie)	CBS
14	M*A*S*H (tie)	CBS
16	Starsky and Hutch (tie)	ABC
16	Good Heavens (tie)	ABC
18	Welcome Back, Kotter	ABC
19	The Mary Tyler Moore Show	CBS
20	Kojak	CBS
1976-77
1	Happy Days	ABC
2	Laverne and Shirley	ABC
3	The ABC Monday Night Movie	ABC
4	M*A*S*H	CBS
5	Charlie's Angels	ABC
6	The Big Event	NBC
7	The Six Million Dollar Man	ABC
8	The ABC Sunday Night Movie (tie)	ABC
8	Baretta (tie)	ABC
8	One Day at a Time (tie)	CBS
11	Three's Company	ABC
12	All in the Family	CBS
13	Welcome Back, Kotter	ABC
14	The Bionic Woman	ABC
15	The Waltons (tie)	CBS
15	Little House on the Prairie (tie)	NBC
17	Barney Miller	ABC
18	60 Minutes (tie)	CBS
18	Hawaii Five-0	CBS
20	NBC Monday Night at the Movies	NBC
1977-78
1	Laverne & Shirley	ABC
2	Happy Days	ABC
3	Three's Company	ABC
4	Charlie's Angles (tie)	ABC
4	All in the Family (tie)	CBS
4	60 Minutes (tie)	CBS
7	Little House on the Prairie	NBC
8	M*A*S*H (tie)	CBS
8	Alice (tie)	CBS
10	One Day at a Time	CBS
11	How the West Was Won	ABC
12	Eight Is Enough	ABC
13	Soap	ABC
14	The Love Boat	ABC
15	NBC Monday Night Movie	NBC
16	NFL Monday Night Football	ABC
17	Barney Miller (tie)	ABC
17	Fantasy Island (tie)	ABC
19	The Amazing Spider-Man (tie)	CBS
19	Project U.F.O. (tie)	NBC
1978-79
1	Laverne & Shirley	ABC
2	Three's Company	ABC
3	Mork & Mindy	ABC
4	Happy Days (tie)	ABC
4	The Ropers (tie)	ABC
6	What's Happening!! (tie)	ABC
6	Alice (8:30) (tie)	CBS
8	M*A*S*H	CBS
9	One Day at a Time (Monday)	CBS
10	Taxi	ABC
11	60 Minutes (tie)	CBS
11	Charlie's Angels (tie)	ABC
13	Angie	ABC
14	Alice (9:30)	CBS
15	All in the Family	CBS
16	WKRP in Cincinnati (tie)	CBS
16	Soap (tie)	ABC
18	Eight Is Enough	ABC
19	All in the Family	CBS
20	Barney Miller (tie)	ABC
20	CBS Sunday Night Movie (tie)	CBS
1979-80
1	60 Minutes	CBS
2	Three's Company	ABC
3	That's Incredible	ABC
4	M*A*S*H	CBS
5	Alice	CBS
6	Dallas	CBS
7	Flo	CBS
8	The Jeffersons	CBS
9	The Dukes of Hazzard	CBS
10	One Day at a Time	CBS
11	WKRP in Cincinnati	CBS
12	Goodtime Girls	ABC
13	Archie Bunker's Place	CBS
14	Taxi	ABC
15	Eight Is Enough	ABC
16	Little House on the Prairie	NBC
17	House Calls	CBS
18	Real People	NBC
19	CHiPs	NBC
20	Happy Days	ABC