Is this a correct conclusion from these three facts ? One in five cigarette smokers dies from smoking. There are about 45, 000,000 smokers in the U.S. There are about 450,000 smoker deaths/year from their smoking habit. So 450, 000/45,000,000 = 1% . So if the number of smokers (45,000,000/yr) is a steady state but the quantity of starters and stoppers/year is unknown. Is it correct to say that in any 20 year period that the 9,000,000 deaths/45,000,000 smokers = 20%, = the 1/5 statistic that one in five smokers dies from smoking ?