The ratio of elderly people increased, as a result, the economy during various age population has changed. Originally populated the required dependencies childhood labor age population rather than the elderly, but in the near future, this will be the elderly who want the labor age population dependency rather than children. The ratio between the labor age population towards the elderly will be reduced until only 2 per 1 person, on the other hand, the elderly 30 years ahead.As a result, both the positive and negative aspects.
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