http://news.yahoo.com/s/bloomberg/20090911/pl_bloomberg/asg76sfnfjam_1 TOKYO (Reuters) â More than 40,000 Japanese people are aged 100 or over, up 10 percent over last year, A smaller workforce will have to shoulder the burden of ballooning pension and healthcare requirements. Just over three people of working age now support each elderly person, but in 50 years the ratio will be closer to one to one. Japan's centenarian numbers rank it second in the world behind the United States, which now has more than 96,000