The economy of Japan is the third largest in the world by nominal GDP, the fourth largest by purchasing power parity  and is the world's second largest developed economy. According to the International Monetary Fund, the country's per capita GDP (PPP) was at $36,899, the 22nd-highest in 2013. Japan is a member of the G7. The Japanese economy is forecasted by the Quarterly Tankan survey of business sentiment conducted by the Bank of Japan. Nikkei 225 presents the monthly report of top Blue chip (stock market) equities on Japan Exchange Group. Due to a volatile currency exchange rate, Japan's GDP as measured in dollars fluctuates widely. Accounting for these fluctuations through use of the Atlas method, Japan is estimated to have a GDP per capita of around $38,490.