As part of its overall weakness, the US dollar is having a difficult time piercing the 100 yen level. After topping the century mark in early April, and then again in early may, the greenback has steadily fallen back from the level. In mid-May, one dollar was worth 94 yen. After a modest bounce, in the last couple days, the value of a dollar is currently (Jun 19) at 96.57 yen. After starting the year at a low point of 88 yen, the dollar-yen ratio has traded mostly ...