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What countries will lose the most people by 2100?

Reuters Logo By Jeremy Schultz of Reuters | Slide 1 of 11: By the year 2100, four of the world's most populous countries will no longer make the top ten, all of them overtaken by surging population growth in Africa. In 2000, less than 7 percent of the world's population was 65 or older. By 2050, that will grow to 15 percent, straining social and medical services, and placing a larger tax burden on the workforce. Here are the ten countries forecast to have the biggest population declines by 2100, based on analysis of recent United Nations population data by the Pew Research Center: REUTERS/Carlos Barria

By the year 2100, four of the world's most populous countries will no longer make the top ten, all of them overtaken by surging population growth in Africa. In 2000, less than 7 percent of the world's population was 65 or older. By 2050, that will grow to 15 percent, straining social and medical services, and placing a larger tax burden on the workforce. Here are the ten countries forecast to have the biggest population declines by 2100, based on analysis of recent United Nations population data by the Pew Research Center: REUTERS/Carlos Barria
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