In total, there were 243 Americans on the list but among the 28 new billionaires, seven are from Russia, one is an Australian wine-maker and another is a Turk who mines soda-ash. If the 'pile it high, sell it cheap' lesson needed to be re-stated, Karl and Theo Albrecht from Germany have done so emphatically. They share third place on the list having increased their fortune to £18bn from their 4,000 Aldi discount stores in 10 countries.