<p style="text-align:start;" size="0" _root="undefined" __ownerid="undefined" __hash="undefined" __altered="false">Japan’s 50 richest saw their collective wealth swell to $249 billion, a 48% rise from last year. For the first time, all 50 fortunes exceed $1 billion, with minimum wealth for inclusion on the list at $1.15 billion.</p>