The strength of the yen is currently driving interest towards bonds and away from stocks in Japan, reports Bloomberg.Akihiko Inoue, chief market analyst in Tokyo at Mizuho Investors Securities, tells the investment news provider that the actions of the nation's central bank are helping to encourage this interest further.The analyst tells Bloomberg: "A strong yen is weighing down on stocks, boosting demand for bonds."Demand for bonds remains strong as the central bank keeps its conservative stance on the economic recovery."Bloomberg adds that the yen reached its highest point against the dollar for 20 months on Monday (September 14th), continuing the gains seen during the previous week.This led to a second consecutive daily rise in 20-year bond valuations in the country's economy.Yen had previously hit a seven-month high against the dollar, Forbes reported on Friday (September 11th), reaching 91.00 to the dollar by the end of the week.