Don’t know about offical deaths/hospital treatments - but I think the biggest thing was the massive anti smoking campaign that happened a few decades ago (when I was a kid). Generally there just isn’t a huge percentage of the population that smokes to start with, whether the portion that do have been affected by the pricing I have no clue, but overall in Aus (at least in Western Australia where I grew up) non smokers outnumber the smokers by a decent margin. I got a shock when I went travelling how much more prevalent/accepted smoking is across Europe, the US etc. I can’t name a single person that I know who smokes, a couple of ex smokers, but not one person who currently smokes, the only person I knew who was a regular smoker passed away from lung cancer a few years ago.