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Since the mid-20th century a change has occurred in the population structure in developed countries. The proportion of elderly people has been increasing. Since 1983, however, in most European countries the population growth of that group has leveled off, although it is expected to continue to grow more rapidly than the rest of the population in most countries through the first third of the 21st century. In the late 20th century Japan had the fastest growing elderly population. Geriatrics, the health care of the elderly, is therefore a considerable burden on health services. In the United Kingdom about one-third of ...(100 of 12687 words)