NEW YORK (AP) -- One thing in shorter supply during what has always been known as broadcast television's rerun season is reruns.
Of the 100 most-watched prime time programs on broadcast networks last week, one-third were repeats, according to the Nielsen company. The Fourth of July week would be considered the height of summer rerun season, as it is traditionally the least-watched week of television in a calendar year, or close to it.
A generation ago, the majority of prime-time broadcast shows in the summer would be reruns. But modern-day consumers are increasingly less willing to watch programs that have been on the air before, particularly when cable gives them a greater degree of choice. Networks have been forced to adapt by providing more original programming in the summer.
The 33 reruns include a handful of immediate repeats, with episodes of shows like CBS' "Extant" or NBC's "America's Got Talent" that ran originally only days earlier. CBS also had the most popular scripted original series of the week with the premiere of "Zoo."
The more traditional CBS had 16 of the 33 reruns, including popular shows "NCIS" and "The Big Bang Theory" that finished in the Nielsen company's top 10 for the week. ABC was next with 10.
Fox scored a rare win in the weekly prime-time ratings, led by its coverage of Sunday's women's World Cup soccer final where the U.S. beat Japan. (The game isn't on Nielsen's list of top individual programs since coverage began before prime time).
For the week, Fox averaged 6.7 million viewers, CBS had 5 million, NBC had 4.7 million, ABC had 3.5 million, Univision had 2.1 million, Telemundo had 1.4 million, ION Television had 1 million and the CW had 730,000.
USA was the most popular cable network, averaging 1.66 million viewers in prime time. Discovery had 1.6 million, TNT had 1.58 million, the Disney Channel had 1.478 million and HGTV had 1.477 million.
ABC "World News Tonight" anchor David Muir's decision to take a vacation week gave an opening for NBC's Lester Holt to be sampled during his second week as the new "Nightly News" anchor. The NBC telecast averaged 8.4 million viewers last week, ABC had 7.5 million and the "CBS Evening News" had 6.7 million.
For the week of June 29-July 5, the top 10 shows, their networks and viewerships: "America's Got Talent" (Tuesday), NBC, 10.74 million; "World Cup Post-Game Show," Fox, 10.16 million; "Zoo," CBS, 8.18 million; "NCIS," CBS, 7.68 million; "Celebrity Family Feud," ABC, 7.11 million; "The Big Bang Theory," CBS, 6.86 million; "American Ninja Warrior," NBC, 6.8 million; "The Bachelorette," ABC, 6.72 million; "60 Minutes," CBS, 6.67 million; "NCIS: Los Angeles," CBS, 6.28 million.
ABC is owned by The Walt Disney Co. CBS is owned by CBS Corp. CW is a joint venture of Warner Bros. Entertainment and CBS Corp. Fox is owned by 21st Century Fox. NBC and Telemundo are owned by Comcast Corp. ION Television is owned by ION Media Networks.