Which sitcom was America's top-rated show from 1971 through 1976, with the theme song "Those Were the Days"?

Which 1970 film begins "What can you say about a twenty-five-year-old girl who died?" Who had his breakthrough in 1970 with "Your Song"? Which Helen Reddy song reached No. 1 in 1973? Barbary apes, Europe's only wild monkeys, have appeared on coins of which British territory? Complete the title of the 1971 Disney film: "___ and Broomsticks". Complete the title of Hal Ashby's 1971 cult film: "___ and Maude". Complete the title of the 1971 Gene Wilder film "___ & the Chocolate Factory". Who won the 1971 Best Actor Oscar for playing Popeye Doyle in "The French Connection"?