That's based on diet intake surveys, it's based on levels of obesity, it's based on a range of factors that gives you an approximate guess as to how much food is actually going into people's mouths.
食料消費のデータは 食料摂取量や肥満のレベルなど どれだけの食料が 実際 人の口に入るかを 推定するデータに基づいて 導き出すことにしました