A Second Class stamp instant cash loans online in sa The economy began to stabilise. Then, thanks to an export boom during the Korean war, the Tokyo Olympics, and rapid economic reform, Japan enjoyed a period of super high growth which averaged 9.1 percent in 1955-1973. Its GDP per capita grew at an annual compound rate of 2.7 percent in 1886-1940 and at 4.6 percent in 1948-2005.