A pedestrian looks at a screen showing movements for the Tokyo Stock Exchange in Tokyo on January 14, 2016. The benchmark Nikkei 225 index at the Tokyo Stock Exchange tumbled 2.68 percent, or 474.68 points, to 17,240.95 at the close, after losing nearly four percent at one stage. AFP PHOTO / KAZUHIRO NOGI / AFP / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images) 多くの人にとって、年金は老