From D to J

Can anyone tell me exactly when the general population progressed from saying 'dungarees' and 'denim' to 'jeans?' When did this shift occur?!? When I Google Image-searched 'dungarees,' I came up with many pictures of overalls, but for 'jeans,' I found this, which in it of itself is a statement as to the evolution of society, the advent of the overuse of sex and seduction in advertising, and the language we use today. Just something I thought of. I'd be interested to hear what you think. Do any of you still say 'dungarees?' At least this group, started in 1990, still does: Dungaree Brothers. Soothing harmonica-heavy music for an overalls-wearing type of day.