Altria is a longtime dividend powerhouse.Tobacco stocks have long been popular among income investors. Few industries have had the same luxury of selling a recession-proof product at wide profit margins, which has allowed tobacco companies to return much of their profits to investors in the form of dividends.Altria (MO 0.02%) certainly fits the bill here, and the stock had an incredible run of almost 50 years. Through 2014, it delivered an average annual total return of 20.6%, according to Wharton professor ...