Calculate U6 from the following data: Total Population: 300 million Children younger than 16: 45 million Institutionalized: 2 million Retirees: 12 million Working full-time: 105 million Working part-time: 15 million Working part-time but want to be working full time: 3 million Unemployed: 10 million Marginally attached: 5 million Enter your answer as a percentage to the nearest tenth, e.g. enter 12.3 for 12.3%