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.
주로 식사 섭취량 조사, 비만 수준 등 얼마나 많은 양의 음식이 사람들 입속으로 들어가는지에 관련된 다양한 자료들을 통해 대략적인 추측을 해보았습니다.