4.United States: In the U.S. around 41 percent of the country's citizens have done the postsecondary education. The country has experienced quite a larger growth in its population from 2000 to 2009 with around 8.68 percent in its population, which is the 12th highest among OECD countries. Just about 71 percent of funding for the educational institutions in the country comes from the public funds and this percent places the country as the sixth lowest according to this measure. When you have a look at the country's largest share of adults with tertiary education among the OECD countries, the country's share is about 25.8 percent.