###Answer the question from the input provided. Please answer from input only.

###Input: In 1993, the FCC repealed the Financial Interest and Syndication Rules, once again allowing networks to hold interests in television production studios. That same year, Capital Cities/ABC purchased the French animation studio DIC Entertainment; it also signed an agreement with Time Warner Cable to carry its owned-and-operated television stations on the provider's systems in ABC O&O markets. By that year, ABC had a total viewership share of 23.63% of American households, just below the limit of 25% imposed by the FCC.

During the 1960s, ABC continued on the same path that it began to take in the mid-1950s, by consolidating the network as part of its effort to gain loyalty from the public. The network's finances improved and allowed it to invest in other properties and programming. In May 1960, ABC purchased Chicago radio station WLS, which had shared airtime with WENR since the 1920s. This acquisition allowed ABC to consolidate its presence in the market. On May 9, 1960, WLS launched a new lineup consisting of ABC Radio programming. In 1960, Canadian entrepreneur John Bassett, who was trying to establish a television station in Toronto, sought the help of ABC to launch the station. Leonard Goldenson agreed to acquire a 25% interest in CFTO-TV; however, legislation by the Canadian Radio-Television Commission prohibited ABC's involvement, resulting in the company withdrawing from the project before the station's launch.

Always in search of new programs that would help it compete with NBC and CBS, ABC's management believed that sports could be a major catalyst in improving the network's market share. On April 29, 1961, ABC debuted Wide World of Sports, an anthology series created by Edgar Scherick through his company Sports Programs, Inc. and produced by a young Roone Arledge which featured a different sporting event each broadcast. ABC purchased Sports Programs, Inc. in exchange for shares in the company, leading it to become the future core of ABC Sports, with Arledge as the executive producer of that division's shows. Wide World of Sports, in particular, was not merely devoted to a single sport, but rather to generally all sporting events.

In 1965, the corporate entity, American Broadcasting-Paramount Theatres, was renamed as the American Broadcasting Companies,  while its cinema division became ABC Theatres;[citation needed] its recording division was renamed ABC Records in 1966. In December of that year, the ABC television network premiered The Dating Game, a pioneer series in its genre, which was a reworking of the blind date concept in which a suitor selected one of three contestants sight unseen based on the answers to selected questions. This was followed up in July 1966 by The Newlywed Game, featuring three recently married couples who guessed the responses to their partner's questions (some of which were fairly risque). As ABC began to outgrow its facilities at 7 West 66th Street, Goldenson found a new headquarters for ABC in a 44 story building located at 1330 Avenue of the Americas in Manhattan, at the corner of 54th Street (now occupied by The Financial Times's New York office). This operation allowed for the conversion of the premises at 66th Street into production facilities for television and radio programs.

ABC dominated the American television landscape during the 1970s and early 1980s (by 1980, the three major networks represented 90% of all prime-time television viewership in the U.S.). Several flagship series debuted on the network during this time including Dynasty, an opulent drama from Aaron Spelling that became a hit when it premiered as a midseason series in 1981, five months before Spelling's other ABC hit Charlie's Angels ended its run. The network was also propelled during the early 1980s by the continued successes of Happy Days, Three's Company, Laverne & Shirley and Fantasy Island, and gained new hits in Too Close for Comfort, Soap spinoff Benson and Happy Days spinoff Mork & Mindy. In 1981, ABC (through its ABC Video Services division) launched the Alpha Repertory Television Service (ARTS), a cable channel operated as a joint venture with the Hearst Corporation offering cultural and arts programming, which aired as a nighttime service over the channel space of Nickelodeon.



###Question: What percentage of prime-time TV viewership did the three big networks represent in 1980?

###Answer: {'answer':'90%'}