Japanese Yen, nominal value:
Japanese Yen, adjusted for inflation (M2 adjusted):
It is interesting to see that japanese stock market bubble was preceded by massive money creation. From the year 1970 to 1983 M2 money-stock multiplied nearly 6 times. Half-life of yen in that period was 5.27 years. Every 5.27 years yen had lost 50% of its value. In long term is the half-life of japanese yen 10.87 years.