But in each of the decades of the 1960's, 1970's, and 1980's, there has been a leap where prices doubled to quadrupled; each of these periods lasted one or two years.
但在民國五十、六十、七十年代，卻分別出現了一次猛烈攀揚一到三倍的情況，每回並均持續了一、二年。