Was just reading an article which stated that the Japanese stock market accounted for over half of the world's market capitalisation at its peak. How is this possible when the US has a population almost 3 times as large and its current gdp is more than double the japanese gdp? Was japanese gdp at one point very close to that of the US? And after the long period of stagnation while the US was still growing cause the two gdps to be what they are today?