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グラフで見るイタリアの高齢者人口の割合は高い?低い?

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trends timeline for %E6%97%A5%E6%9C%AC%E3%81%AE%E4%BA%BA%E5%8F%A3%E7%B5%B1%E8%A8%88%20-%20Demographics%20of%20Japan