Japans debt is largely domestic (Japan Post / JGB) thus has little influence on the trade balance. Banking crisis has been going on since 2008 thus why didnt t

Japans debt is largely domestic (Japan Post / JGB) thus has little influence on the trade balance. Banking crisis has been going on since 2008 thus why didnt the trade balance suddenly fall this year instead of 2008/2009/2010 What is your explanation for the sudden change in trade balance?