In 1991 Japan could look back on three decades of growth at an average rate of 6.5 percent. In the 1980's Japan dominated consumer electronics, semiconductors, automobiles and Japanese companies were buying up American properties at an alarming rate. But the past five years have been ones of economic gloom and the solution is elusive. Nissan's auto sales have fallen 22 percent and it has closed factories. Property values have fallen 50 percent and resulted in bad loan losses for Japanese banks of as much as $1 trillion. Homebuyers on around 1990 are burdened with properties that are worth half of what they paid for them.