Whats with the increasing price of a pack of cigarettes?

Ok, i will admit that i have been a cigarette smoker for 50 years. i do not plan on quitting, so please do not go there. when i was 16, a pack of cigarettes cost 25 cents. when i was 17, the price rose to 35 cents. i vowed to quit smoking, if cigarette prices increased again. one year later, they leaped to 50 cents a pack. i should have kept my promise to quit smoking, at that time. anyway, i am now paying around $45 dollars for a carton of cigarettes. thats about $4.39 cents a pack! what happened? did the cost of additives increase? did the fire safe cigarette papers cost more for us not to burn ourselves to death? did the CEOs need a raise? someone please enlighten me as to why, today, one cigarette costs almost 25 cents, the price of a whole pack of cigarettes, when i was a teenager?