Economic damage could total up to 220 trillion yen ($1.50 trillion), or more than a third of Japan's annual gross domestic product, with long-lasting impacts on infrastructure and supply chains for coastal industrial powerhouses producing cars and other key Japanese products. PREVIOUS NANKAI TROUGH-RELATED QUAKES Through history, Nankai Trough earthquakes have been recorded on multiple occasions since 684, often with accounts of tsunamis striking coastal villages. The most recent Nankai Trough quake happened in 1946 when a magnitude 8 tremor and 6.9-metre (22.6-ft) tsunami waves killed 1,330 people. ($1 = 147.0700 yen) (This story has been refiled to fix a typo in paragraph 8) (Reporting by Kantaro Komiya; Editing by Michael Perry)