“Many countries are facing a shrinking pool of their working-age populations, often considered to be ages 15 to 64, to support the population ages 65+, jeopardizing pension guarantees and long-term health care programs for the elderly. Worldwide in 1950, there were 12 persons of working age for every person age 65 or older. By 2010, that number had shrunk to 9. By 2050, this elderly support ratio, which indicates levels of potential social support available for the elderly, is projected to drop to 4. The Population Reference Bureau’s 2010 World Population Data Sheet and its summary report offer detailed information on 19 population, health, and environment indicators for more than 200 countries. Global population rose to 6.9 billion in 2010, with nearly all of that growth in the world’s developing countries. In contrast, the world’s developed countries, totaling 1.2 billion people, saw their populations continue to age as the numbers of those of working age dwindle.”