When did the switch from "wide" to "tall" CRTs occur?

[ESigma25]

So we all know that CRTs, even non-console sets, used to be in a "wide" form factor with the knobs/buttons to one side of the tube and speakers on either side of the tube. And that by the mid 90s all non-console sets had changed to a "tall" form factor, with the speakers and buttons under the tube. My question is...when did this change start happening? My old 1990 Sanyo set was a "tall" set but in 1989 there were definitely still "wide" sets.