Back in the early 80’s, at our neighborhood parish— never. It was the priest’s personal decision, I think.
Ever since then, at every other church I’ve attended-- always-- except on occasion during flu season. If things are particularly bad, sometimes the diocese will put a ban on receiving under both species, under the last two bishops, but I didn’t notice it previous to that. They also have had a year-round ban against communion by intinction in our diocese (Fort Worth) as well, under at least the last three bishops, but I’ve been to churches in other diocese (ie, Houston/Galveston) that don’t have any issues with communion by intinction, which seems to get periodically defaulted to during flu season as well, although I don’t know if it’s on a parish-by-parish basis or is a diocesan-wide mandate.