Hey Lavendar,not only was it popular,it was the very 1st #1 song of the 1970's and stayed #1 for 4 weeks!
My parents had the 45rpm record as well. Which I've since replaced with a "like new" copy.
I'd have to look it up but I also think it may have won the Academy award for Best original song from a motion picture as well. (I'll re-edit when I know for certain.)
