10. The accompanying table shows data from the Penn World Table, Version 8.0, for real GDP per capita (2005 U.S. dollars) for Argentina, Ghana, South Korea, and the United States in 1960 and 2011. Complete the table. Have these countries converged economically?
| 1960 | 2011 | |||
| Real GDP per capita (2005 dollars) | Percentage of U.S. real GDP per capita | Real GDP per capita (2005 dollars) | Percentage of U.S. real GDP per capita | |
| Argentina | $6,585 | ? | $13,882 | ? |
| Ghana | 1,557 | ? | 2,349 | ? |
| South Korea | 1,610 | ? | 29,618 | ? |
| United States | 15,136 | ? | 42,244 | ? |