Japan's GDP slumps an annualized 12.7% on-quarter in Q4 By V. Phani Kumar Last update: 7:27 p.m. EST Feb. 15, 2009 Comments: 121 HONG KONG (MarketWatch) -- Japan's economy slumped at a larger-than-expected 3.3% in the October-December period from the previous quarter as the impact of the global financial crisis hit its exports hard, according to data released Monday. The steep fall reportedly represents the biggest drop since 1974. On an annualized basis, the gross economic product slumped 12.7% during the quarter, data from the Cabinet Office showed,