When New FM launched April 1989 it almost instantly went to number one, and stayed the number one station for it’s first 4 years.
There’s actually very little data available in regards to the ratings.
New FM hovered around 28-29 percent of audience for it’s first four years.
X107 was put to rest I think late 1993? After being sold and re-branded to NXFM.
In 1999 New FM was sold and the new owner really made a mess of the station.
And that’s when NXFM started to catch up to New FM in the ratings but it wasn’t until late 2000, maybe 2001 or early 2003 NXFM hit the number one station spot. But I don’t think it stayed number one for long.
A lot of that is educated guesses. But it wouldn’t be far off I think.