To be quite honest I don't recall this one from childhood. Maybe it wasn't a hit in Australia however I was only a toddler at the time. Actually it got to no. 4 here but the other 3 here were number ones. I think she was bigger in Australia than anywhere else, having hits long after this little run of gold.
To me these are the 4 classics that were released in succession. The next couple I didn't like so much (but others rate them). That's 4 classics though. The Buggles only managed one.