Though Japan food production index fluctuated substantially in recent years, it tended to decrease through 2004 - 2013 period ending at 97.9 index in 2013.
Food production index covers food crops that are considered edible and that contain nutrients. Coffee and tea are excluded because, although edible, they have no nutritive value. 2004-2006 = 100.
It's a one pager PDF full of live links to agriculture-related data, statistics, and dashboards from leading industry sources. It will be a useful resource for any analyst, business executive, or researcher with an interest in the food security and prices, agricultural production and supply and much more.