The Lumina Foundation today released its sixth annual report on the national college completion push it has helped lead. The foundation said 40 percent of working-age Americans held a two- or four-year degree in 2013, a modest improvement from the previous year's rate of 39.4 percent. Lumina's goal is for 60 percent of adults to hold a credential by 2025. Large attainment gaps persist by race, found the report, which breaks the gaps down by city and state.