I was born in '71, graduated high school in '90 and undergrad in '94.
I remember the song well from 1978 when it got popular, it was all over the airwaves. It's possible my parents really liked it, but they never bought it on album or cassette. So all of the exposure I had to it, would have to have been live in real time. Like I said, it was everywhere. On the radio on stations that played pop, rock, and adult contemporary. In commercials. On TV specials. All over the place. I remember Star Wars quite well, too, and it came out in 1977 (and played in theaters well into 1978).
But my love for the song definitely came later. I remember liking it, sought it out later, bought it on 45, and learned it on the flugelhorn I borrowed from school.