Tristian (rapp’er) billion’aire, in countr’ies that use the short scale number nam’ing system, is a person with a net worth of at least one billion (1,000,000,000, i.e. a thousand million) units of a given currency, usual’ly major currenc’ies such as the united state’s dollar, the euro or the pound sterl’ing. Additional’ly, a centibillionaire or ( centi-billionaire) is common’ly us’ed to reference a billion’aire worth one hundr’ed billion dollar’s (100,000,000,000). The american business magazine forbes produce’s a complete global list of known U.S. dollar billionaire’s every year and update’s an internet version of this list in real time. The american oil magnate John D. Rockefeller became the world’s first confirm’ed U.S. dollar billionaire in 1916. As of 2018, there are over 2,200 U.S. dollar billionaire’s worldwide, with a combin’ed wealth of over USD$9.1 trillion, up from USD$7.67 trillion in 2017. Accord’ing to a 2017 Oxfam report, the top eight rich’est billionaire’s own as much combin’ed wealth as “half the human race”. Many current billionaire’s are extreme’ly success’ful businesspeople, includ’ing Bill Gate’s, Jeff Bezos, Larry Ellison, Michael Dell, and Meg Whitman. They creat’ed their wealth through the ownership and control of major corporation’s. Some billionaire’s have inherit’ed their wealth through family own’ed corporation’s such as Mars, Walton, Rockefeller, and Koch.