BCG’s Sustainable Economic Development Assessment (SEDA) is a comprehensive, objective diagnostic tool for evaluating the relative level of well-being for citizens in 148 countries plus Hong Kong, a special administrative region of China. (For the sake of simplicity, we refer to all those entities as “countries”.) SEDA defines well-being through three elements—economics, investments, and sustainability—that comprise ten key areas, or dimensions. In total, the assessment draws on nearly 50,000 data points. The overview tab in this interactive graphic shows countries’ SEDA scores both as a snapshot—the current level of well-being—and in terms of change, or recent progress, in well-being during the period of 2006 to 2013. The chart tab shows how countries perform in each of the ten SEDA dimensions relative to either the rest of the world or a selected group of peer countries. The methodology tab outlines in detail the ten SEDA dimensions SEDA provides a basis for countries to benchmark themselves as they try to identify and prioritize areas requiring action and formulate national economic-development strategies.