1984년도에는 토지등급체계를 변경하여 96등급으로 분류하던 것을 365등급으로 세분화하여 당시 2천 4백만 필지에 대하여 새로운 등급을 부여하였다.
In 1984, the land grading system was changed and the class of 96 grades was subdivided into 365 grades, and a new grade was assigned to 24 million parcels at that time.