1.
self-sufficiency rate; self-sufficiency ratio
The percentage of a country's or region's consumption of a particular resource that is produced domestically. Most commonly discussed in relation to food supply in Japan.
Usage
A frequently discussed topic in Japanese politics and media. Japan's calorie-based food self-sufficiency rate has hovered around 38% in recent years, one of the lowest among developed nations. The government has set targets to increase it. Also discussed in the context of energy policy.